Question 781725
If y is the longest side, then the expressions for the other sides are:
{{{y/4}}}, and {{{y-9}}}.

This perimeter problem basically becomes a simple algebra problem.

{{{y+y/4+y-9=117}}}
{{{y(1-1/4+1)=117+9}}}
{{{y(1&3/4)=126}}}
{{{y(7/4)=126}}}
{{{y=126(4/7)}}}
{{{y=4*18=72}}} from which you can find the other side lengths.