Home / 90,938.52-136,318.50-43,540.20

Finding the Fourth Proportional to 90,938.52, 136,318.50 and 43,540.20

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Solution

The fourth proportional to 90,938.52, 136,318.50 and 43,540.20 is: 65,267.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,938.52 : 136,318.50 = 43,540.20 : x
  2. Step 2: Convert to fraction form
    90,938.52/136,318.50 = 43,540.20/x
  3. Step 3: Cross multiply
    90,938.52x = 136,318.50 × 43,540.20
  4. Step 4: Simplify right side
    90,938.52x = 5,935,334,753.70
  5. Step 5: Solve for x
    x = 5,935,334,753.70/90,938.52
  6. Step 6: Final answer
    x = 65,267.55

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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.