For the layered material below. The layers from top to bottom have K values of K$1=100$

m$/$d$,$ K$2=50$ m$/$d$,$ K$3=0\mathrm{.}1$ m$/$d and K$4=200$ m$/$d and corresponding thicknesses of d$1=125$ m$,$ d$2=60$

m$,$ d$3=125$ m and d$4=70$ m$.$ Calculate the anisotropy ratio $($Kh$/$Kv$).$