Finding the Fourth Proportional to 156,657.42, 215,640.84 and 135,215.16
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Solution
The fourth proportional to 156,657.42, 215,640.84 and 135,215.16 is: 186,125.31
Step by Step Solution
- Step 1: Write the proportion equation
156,657.42 : 215,640.84 = 135,215.16 : x - Step 2: Convert to fraction form
156,657.42/215,640.84 = 135,215.16/x - Step 3: Cross multiply
156,657.42x = 215,640.84 × 135,215.16 - Step 4: Simplify right side
156,657.42x = 29,157,910,683.13 - Step 5: Solve for x
x = 29,157,910,683.13/156,657.42 - Step 6: Final answer
x = 186,125.31
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1.5x scale
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.