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Finding the Fourth Proportional to 138,981.80, 208,472.86 and 33,800.04

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Solution

The fourth proportional to 138,981.80, 208,472.86 and 33,800.04 is: 50,700.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,981.80 : 208,472.86 = 33,800.04 : x
  2. Step 2: Convert to fraction form
    138,981.80/208,472.86 = 33,800.04/x
  3. Step 3: Cross multiply
    138,981.80x = 208,472.86 × 33,800.04
  4. Step 4: Simplify right side
    138,981.80x = 7,046,391,006.91
  5. Step 5: Solve for x
    x = 7,046,391,006.91/138,981.80
  6. Step 6: Final answer
    x = 50,700.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.