[tex]Method\ 1:\\\\p\%=\dfrac{p}{100}\\\\75\%=\dfrac{75}{100}=0.75\\\\75\%\ of\ 150\ is\ 0.75\cdot150=\boxed{112.5}\\-----------------------\\Method\ 2:\\\\\begin{array}{ccc}100\%&-&150\\\\75\%&-&x\end{array}\qquad\text{cross multiply}\\\\100x=(75)(150)\\\\100x=11250\qquad\text{divide both sides by 100}\\\\\boxed{x=112.5}[/tex]
