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Finding the Fourth Proportional to 90,229.75, 135,344.01 and 70,524.88

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Solution

The fourth proportional to 90,229.75, 135,344.01 and 70,524.88 is: 105,786.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,229.75 : 135,344.01 = 70,524.88 : x
  2. Step 2: Convert to fraction form
    90,229.75/135,344.01 = 70,524.88/x
  3. Step 3: Cross multiply
    90,229.75x = 135,344.01 × 70,524.88
  4. Step 4: Simplify right side
    90,229.75x = 9,545,119,387.25
  5. Step 5: Solve for x
    x = 9,545,119,387.25/90,229.75
  6. Step 6: Final answer
    x = 105,786.84

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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.