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Finding the Fourth Proportional to 125,085.80, 172,619.80 and 67,726.36

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Solution

The fourth proportional to 125,085.80, 172,619.80 and 67,726.36 is: 93,463.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,085.80 : 172,619.80 = 67,726.36 : x
  2. Step 2: Convert to fraction form
    125,085.80/172,619.80 = 67,726.36/x
  3. Step 3: Cross multiply
    125,085.80x = 172,619.80 × 67,726.36
  4. Step 4: Simplify right side
    125,085.80x = 11,690,910,717.93
  5. Step 5: Solve for x
    x = 11,690,910,717.93/125,085.80
  6. Step 6: Final answer
    x = 93,463.13

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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.