Home / 99,747.20-137,651.28-54,425.39

Finding the Fourth Proportional to 99,747.20, 137,651.28 and 54,425.39

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Solution

The fourth proportional to 99,747.20, 137,651.28 and 54,425.39 is: 75,107.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,747.20 : 137,651.28 = 54,425.39 : x
  2. Step 2: Convert to fraction form
    99,747.20/137,651.28 = 54,425.39/x
  3. Step 3: Cross multiply
    99,747.20x = 137,651.28 × 54,425.39
  4. Step 4: Simplify right side
    99,747.20x = 7,491,724,598.00
  5. Step 5: Solve for x
    x = 7,491,724,598.00/99,747.20
  6. Step 6: Final answer
    x = 75,107.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.