Finding the Fourth Proportional to 122,239.99, 168,691.79 and 71,288.05
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Solution
The fourth proportional to 122,239.99, 168,691.79 and 71,288.05 is: 98,377.86
Step by Step Solution
- Step 1: Write the proportion equation
122,239.99 : 168,691.79 = 71,288.05 : x - Step 2: Convert to fraction form
122,239.99/168,691.79 = 71,288.05/x - Step 3: Cross multiply
122,239.99x = 168,691.79 × 71,288.05 - Step 4: Simplify right side
122,239.99x = 12,025,708,760.11 - Step 5: Solve for x
x = 12,025,708,760.11/122,239.99 - Step 6: Final answer
x = 98,377.86
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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.