Finding the Fourth Proportional to 156,502.68, 215,973.80 and 84,882.68
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Solution
The fourth proportional to 156,502.68, 215,973.80 and 84,882.68 is: 117,138.15
Step by Step Solution
- Step 1: Write the proportion equation
156,502.68 : 215,973.80 = 84,882.68 : x - Step 2: Convert to fraction form
156,502.68/215,973.80 = 84,882.68/x - Step 3: Cross multiply
156,502.68x = 215,973.80 × 84,882.68 - Step 4: Simplify right side
156,502.68x = 18,332,434,953.78 - Step 5: Solve for x
x = 18,332,434,953.78/156,502.68 - Step 6: Final answer
x = 117,138.15
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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.