Finding the Fourth Proportional to 136,734.08, 188,640.42 and 85,657.92
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Solution
The fourth proportional to 136,734.08, 188,640.42 and 85,657.92 is: 118,174.97
Step by Step Solution
- Step 1: Write the proportion equation
136,734.08 : 188,640.42 = 85,657.92 : x - Step 2: Convert to fraction form
136,734.08/188,640.42 = 85,657.92/x - Step 3: Cross multiply
136,734.08x = 188,640.42 × 85,657.92 - Step 4: Simplify right side
136,734.08x = 16,158,546,005.13 - Step 5: Solve for x
x = 16,158,546,005.13/136,734.08 - Step 6: Final answer
x = 118,174.97
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.