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Finding the Fourth Proportional to 132,617.20, 198,925.80 and 90,626.80

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Solution

The fourth proportional to 132,617.20, 198,925.80 and 90,626.80 is: 135,940.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,617.20 : 198,925.80 = 90,626.80 : x
  2. Step 2: Convert to fraction form
    132,617.20/198,925.80 = 90,626.80/x
  3. Step 3: Cross multiply
    132,617.20x = 198,925.80 × 90,626.80
  4. Step 4: Simplify right side
    132,617.20x = 18,028,008,691.44
  5. Step 5: Solve for x
    x = 18,028,008,691.44/132,617.20
  6. Step 6: Final answer
    x = 135,940.20

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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.