SAT Lines, angles, and triangles Question

Parallelogram $ABCD$ is similar to parallelogram $WXYZ$, such that $A$, $B$, $C$, and $D$ correspond to $W$, $X$, $Y$, and $Z$, respectively. The measure of angle $A$ is $45^{\circ }$ and $WX=3AB$. What is the measure of angle $W$?