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Finding the Fourth Proportional to 90,662.40, 135,713.44 and 89,333.88

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Solution

The fourth proportional to 90,662.40, 135,713.44 and 89,333.88 is: 133,724.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,662.40 : 135,713.44 = 89,333.88 : x
  2. Step 2: Convert to fraction form
    90,662.40/135,713.44 = 89,333.88/x
  3. Step 3: Cross multiply
    90,662.40x = 135,713.44 × 89,333.88
  4. Step 4: Simplify right side
    90,662.40x = 12,123,808,163.35
  5. Step 5: Solve for x
    x = 12,123,808,163.35/90,662.40
  6. Step 6: Final answer
    x = 133,724.77

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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.