Home / 91,981.20-137,862.45-82,577.10

Finding the Fourth Proportional to 91,981.20, 137,862.45 and 82,577.10

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Solution

The fourth proportional to 91,981.20, 137,862.45 and 82,577.10 is: 123,767.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,981.20 : 137,862.45 = 82,577.10 : x
  2. Step 2: Convert to fraction form
    91,981.20/137,862.45 = 82,577.10/x
  3. Step 3: Cross multiply
    91,981.20x = 137,862.45 × 82,577.10
  4. Step 4: Simplify right side
    91,981.20x = 11,384,281,319.90
  5. Step 5: Solve for x
    x = 11,384,281,319.90/91,981.20
  6. Step 6: Final answer
    x = 123,767.48

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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.