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Finding the Fourth Proportional to 135,660.80, 203,491.20 and 56,766.80

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Solution

The fourth proportional to 135,660.80, 203,491.20 and 56,766.80 is: 85,150.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,660.80 : 203,491.20 = 56,766.80 : x
  2. Step 2: Convert to fraction form
    135,660.80/203,491.20 = 56,766.80/x
  3. Step 3: Cross multiply
    135,660.80x = 203,491.20 × 56,766.80
  4. Step 4: Simplify right side
    135,660.80x = 11,551,544,252.16
  5. Step 5: Solve for x
    x = 11,551,544,252.16/135,660.80
  6. Step 6: Final answer
    x = 85,150.20

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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.