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Finding the Fourth Proportional to 139,601.36, 209,382.28 and 44,839.78

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Solution

The fourth proportional to 139,601.36, 209,382.28 and 44,839.78 is: 67,253.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,601.36 : 209,382.28 = 44,839.78 : x
  2. Step 2: Convert to fraction form
    139,601.36/209,382.28 = 44,839.78/x
  3. Step 3: Cross multiply
    139,601.36x = 209,382.28 × 44,839.78
  4. Step 4: Simplify right side
    139,601.36x = 9,388,655,371.10
  5. Step 5: Solve for x
    x = 9,388,655,371.10/139,601.36
  6. Step 6: Final answer
    x = 67,253.32

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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.