Home / 131,940.38-182,089.24-72,335.90

Finding the Fourth Proportional to 131,940.38, 182,089.24 and 72,335.90

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Solution

The fourth proportional to 131,940.38, 182,089.24 and 72,335.90 is: 99,829.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,940.38 : 182,089.24 = 72,335.90 : x
  2. Step 2: Convert to fraction form
    131,940.38/182,089.24 = 72,335.90/x
  3. Step 3: Cross multiply
    131,940.38x = 182,089.24 × 72,335.90
  4. Step 4: Simplify right side
    131,940.38x = 13,171,587,964.43
  5. Step 5: Solve for x
    x = 13,171,587,964.43/131,940.38
  6. Step 6: Final answer
    x = 99,829.85

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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.