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Finding the Fourth Proportional to 125,058.87, 172,581.12 and 68,470.20

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Solution

The fourth proportional to 125,058.87, 172,581.12 and 68,470.20 is: 94,488.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,058.87 : 172,581.12 = 68,470.20 : x
  2. Step 2: Convert to fraction form
    125,058.87/172,581.12 = 68,470.20/x
  3. Step 3: Cross multiply
    125,058.87x = 172,581.12 × 68,470.20
  4. Step 4: Simplify right side
    125,058.87x = 11,816,663,802.62
  5. Step 5: Solve for x
    x = 11,816,663,802.62/125,058.87
  6. Step 6: Final answer
    x = 94,488.81

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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.