Home / 99,372.20-137,132.28-54,049.20

Finding the Fourth Proportional to 99,372.20, 137,132.28 and 54,049.20

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Solution

The fourth proportional to 99,372.20, 137,132.28 and 54,049.20 is: 74,587.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,372.20 : 137,132.28 = 54,049.20 : x
  2. Step 2: Convert to fraction form
    99,372.20/137,132.28 = 54,049.20/x
  3. Step 3: Cross multiply
    99,372.20x = 137,132.28 × 54,049.20
  4. Step 4: Simplify right side
    99,372.20x = 7,411,890,028.18
  5. Step 5: Solve for x
    x = 7,411,890,028.18/99,372.20
  6. Step 6: Final answer
    x = 74,587.16

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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.