larger than or as large as

[sitifan]

1. A is three times larger than B.
2. B is three times as large as B.
What's the difference in meaning between the above sentences?
3. A is one-sixth larger than B.
4. A is one-sixth as large as B.
What's the difference in meaning between #3 and #4?

[jlinger]

If B is 100 pounds in mass, then

1. A = 3*100 = 300 lbs
2. B (I think you mean A) = 3*100 = 300 lbs
3. A = 1.17 * 100 = 117 lbs
4. A = 100/6 = 16.67 lbs

[Raymott]

If B is 100 pounds in mass, then

1. A = 3*100 = 300 lbs
2. B (I think you mean A) = 3*100 = 300 lbs

I disagree with 1.
If:
i. A is three times larger than B, and
ii. B = 100 pounds, then
iii. A is 300 pounds larger than B, i.e. 400 lbs.

'Three times larger' should not be used to mean 'three times as large'.
This can easily be understood by comparing "half as large" (0.5 times) with "a half larger" (1.5 times).

I think terms like 'three times larger' should not be used at all, because there will always be misunderstandings between those who understand the term differently.
With 'three times as large', there is rarely disagreement about meaning.