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Finding the Fourth Proportional to 139,073.87, 208,470.13 and 54,801.27

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Solution

The fourth proportional to 139,073.87, 208,470.13 and 54,801.27 is: 82,146.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,073.87 : 208,470.13 = 54,801.27 : x
  2. Step 2: Convert to fraction form
    139,073.87/208,470.13 = 54,801.27/x
  3. Step 3: Cross multiply
    139,073.87x = 208,470.13 × 54,801.27
  4. Step 4: Simplify right side
    139,073.87x = 11,424,427,744.06
  5. Step 5: Solve for x
    x = 11,424,427,744.06/139,073.87
  6. Step 6: Final answer
    x = 82,146.47

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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.