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Finding the Fourth Proportional to 89,062.60, 133,593.90 and 80,314.60

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Solution

The fourth proportional to 89,062.60, 133,593.90 and 80,314.60 is: 120,471.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,062.60 : 133,593.90 = 80,314.60 : x
  2. Step 2: Convert to fraction form
    89,062.60/133,593.90 = 80,314.60/x
  3. Step 3: Cross multiply
    89,062.60x = 133,593.90 × 80,314.60
  4. Step 4: Simplify right side
    89,062.60x = 10,729,540,640.94
  5. Step 5: Solve for x
    x = 10,729,540,640.94/89,062.60
  6. Step 6: Final answer
    x = 120,471.90

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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.