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Finding the Fourth Proportional to 89,617.20, 134,425.80 and 88,234.80

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Solution

The fourth proportional to 89,617.20, 134,425.80 and 88,234.80 is: 132,352.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,617.20 : 134,425.80 = 88,234.80 : x
  2. Step 2: Convert to fraction form
    89,617.20/134,425.80 = 88,234.80/x
  3. Step 3: Cross multiply
    89,617.20x = 134,425.80 × 88,234.80
  4. Step 4: Simplify right side
    89,617.20x = 11,861,033,577.84
  5. Step 5: Solve for x
    x = 11,861,033,577.84/89,617.20
  6. Step 6: Final answer
    x = 132,352.20

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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.