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Finding the Fourth Proportional to 135,217.62, 202,411.24 and 85,062.90

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Solution

The fourth proportional to 135,217.62, 202,411.24 and 85,062.90 is: 127,333.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,217.62 : 202,411.24 = 85,062.90 : x
  2. Step 2: Convert to fraction form
    135,217.62/202,411.24 = 85,062.90/x
  3. Step 3: Cross multiply
    135,217.62x = 202,411.24 × 85,062.90
  4. Step 4: Simplify right side
    135,217.62x = 17,217,687,067.00
  5. Step 5: Solve for x
    x = 17,217,687,067.00/135,217.62
  6. Step 6: Final answer
    x = 127,333.16

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1.5x scale

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.