Finding the Fourth Proportional to 156,153.36, 215,490.12 and 84,531.54
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Solution
The fourth proportional to 156,153.36, 215,490.12 and 84,531.54 is: 116,652.70
Step by Step Solution
- Step 1: Write the proportion equation
156,153.36 : 215,490.12 = 84,531.54 : x - Step 2: Convert to fraction form
156,153.36/215,490.12 = 84,531.54/x - Step 3: Cross multiply
156,153.36x = 215,490.12 × 84,531.54 - Step 4: Simplify right side
156,153.36x = 18,215,711,698.38 - Step 5: Solve for x
x = 18,215,711,698.38/156,153.36 - Step 6: Final answer
x = 116,652.70
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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.