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Finding the Fourth Proportional to 139,130.60, 208,711.22 and 44,338.73

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Solution

The fourth proportional to 139,130.60, 208,711.22 and 44,338.73 is: 66,512.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,130.60 : 208,711.22 = 44,338.73 : x
  2. Step 2: Convert to fraction form
    139,130.60/208,711.22 = 44,338.73/x
  3. Step 3: Cross multiply
    139,130.60x = 208,711.22 × 44,338.73
  4. Step 4: Simplify right side
    139,130.60x = 9,253,989,166.30
  5. Step 5: Solve for x
    x = 9,253,989,166.30/139,130.60
  6. Step 6: Final answer
    x = 66,512.97

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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.