Home / 90,549.85-135,914.17-67,982.04

Finding the Fourth Proportional to 90,549.85, 135,914.17 and 67,982.04

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Solution

The fourth proportional to 90,549.85, 135,914.17 and 67,982.04 is: 102,040.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,549.85 : 135,914.17 = 67,982.04 : x
  2. Step 2: Convert to fraction form
    90,549.85/135,914.17 = 67,982.04/x
  3. Step 3: Cross multiply
    90,549.85x = 135,914.17 × 67,982.04
  4. Step 4: Simplify right side
    90,549.85x = 9,239,721,691.98
  5. Step 5: Solve for x
    x = 9,239,721,691.98/90,549.85
  6. Step 6: Final answer
    x = 102,040.17

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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.