Finding the Fourth Proportional to 121,502.43, 167,753.84 and 79,132.95
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Solution
The fourth proportional to 121,502.43, 167,753.84 and 79,132.95 is: 109,255.89
Step by Step Solution
- Step 1: Write the proportion equation
121,502.43 : 167,753.84 = 79,132.95 : x - Step 2: Convert to fraction form
121,502.43/167,753.84 = 79,132.95/x - Step 3: Cross multiply
121,502.43x = 167,753.84 × 79,132.95 - Step 4: Simplify right side
121,502.43x = 13,274,855,837.36 - Step 5: Solve for x
x = 13,274,855,837.36/121,502.43 - Step 6: Final answer
x = 109,255.89
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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.