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Finding the Fourth Proportional to 139,237.38, 208,829.61 and 39,373.49

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Solution

The fourth proportional to 139,237.38, 208,829.61 and 39,373.49 is: 59,052.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,237.38 : 208,829.61 = 39,373.49 : x
  2. Step 2: Convert to fraction form
    139,237.38/208,829.61 = 39,373.49/x
  3. Step 3: Cross multiply
    139,237.38x = 208,829.61 × 39,373.49
  4. Step 4: Simplify right side
    139,237.38x = 8,222,351,083.11
  5. Step 5: Solve for x
    x = 8,222,351,083.11/139,237.38
  6. Step 6: Final answer
    x = 59,052.76

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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.