Home / 102,964.11-142,092.89-57,640.97

Finding the Fourth Proportional to 102,964.11, 142,092.89 and 57,640.97

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Solution

The fourth proportional to 102,964.11, 142,092.89 and 57,640.97 is: 79,545.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,964.11 : 142,092.89 = 57,640.97 : x
  2. Step 2: Convert to fraction form
    102,964.11/142,092.89 = 57,640.97/x
  3. Step 3: Cross multiply
    102,964.11x = 142,092.89 × 57,640.97
  4. Step 4: Simplify right side
    102,964.11x = 8,190,371,011.03
  5. Step 5: Solve for x
    x = 8,190,371,011.03/102,964.11
  6. Step 6: Final answer
    x = 79,545.88

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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.