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Finding the Fourth Proportional to 135,568.62, 203,324.04 and 85,581.90

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Solution

The fourth proportional to 135,568.62, 203,324.04 and 85,581.90 is: 128,354.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,568.62 : 203,324.04 = 85,581.90 : x
  2. Step 2: Convert to fraction form
    135,568.62/203,324.04 = 85,581.90/x
  3. Step 3: Cross multiply
    135,568.62x = 203,324.04 × 85,581.90
  4. Step 4: Simplify right side
    135,568.62x = 17,400,857,658.88
  5. Step 5: Solve for x
    x = 17,400,857,658.88/135,568.62
  6. Step 6: Final answer
    x = 128,354.61

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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.