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Question
Verify the following:
108 : 72 : : 129 : 86
Solution
108 : 72 : : 129 : 86
`108/72 =(108 ÷ 36)/(72 ÷ 36) =3/2` (H.C.F. of 108 and 72 is 36.)
`129/86=(129 ÷ 43)/(86 ÷ 43)=3/2` (H.C.F. of 129 and 86 is 43.)
Hence, 108 : 72 : : 129 : 86 are in proportion.
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