由已知,易得:CF=GO=ED,BF=OH=AE
∴HO/CF=AE/ED=1∶3
∵HO∥CF
∴△HOL∽△CFL
∴HL/CL=HO/CF=1/3
CL/CL=4/3
∴S△HCO/S△COL=4/3
S△HCO=4/3S△COL=12 (△HCO和△COL等高)
∵S△COG/S△HCO=HO/GO=AE/ED=1/3
∴S△COG=3S△HCO=36
S△CHG=S△COG+S△HCO=36+12=48
∴S矩形BCGH=2S△CHG=2×48=96
∵AH:HB=1∶3
∴AB/HB=4/3
∴S矩形ABCD=4/3S矩形BCGH=4/3×96=128