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Finding the Fourth Proportional to 139,082.40, 208,639.90 and 44,279.39

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Solution

The fourth proportional to 139,082.40, 208,639.90 and 44,279.39 is: 66,424.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,082.40 : 208,639.90 = 44,279.39 : x
  2. Step 2: Convert to fraction form
    139,082.40/208,639.90 = 44,279.39/x
  3. Step 3: Cross multiply
    139,082.40x = 208,639.90 × 44,279.39
  4. Step 4: Simplify right side
    139,082.40x = 9,238,448,078.61
  5. Step 5: Solve for x
    x = 9,238,448,078.61/139,082.40
  6. Step 6: Final answer
    x = 66,424.28

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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.