Home / 124,838.80-172,229.13-79,508.66

Finding the Fourth Proportional to 124,838.80, 172,229.13 and 79,508.66

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Solution

The fourth proportional to 124,838.80, 172,229.13 and 79,508.66 is: 109,691.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,838.80 : 172,229.13 = 79,508.66 : x
  2. Step 2: Convert to fraction form
    124,838.80/172,229.13 = 79,508.66/x
  3. Step 3: Cross multiply
    124,838.80x = 172,229.13 × 79,508.66
  4. Step 4: Simplify right side
    124,838.80x = 13,693,706,478.12
  5. Step 5: Solve for x
    x = 13,693,706,478.12/124,838.80
  6. Step 6: Final answer
    x = 109,691.11

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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.