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Finding the Fourth Proportional to 111,811.20, 167,425.20 and 88,288.80

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Solution

The fourth proportional to 111,811.20, 167,425.20 and 88,288.80 is: 132,202.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,811.20 : 167,425.20 = 88,288.80 : x
  2. Step 2: Convert to fraction form
    111,811.20/167,425.20 = 88,288.80/x
  3. Step 3: Cross multiply
    111,811.20x = 167,425.20 × 88,288.80
  4. Step 4: Simplify right side
    111,811.20x = 14,781,769,997.76
  5. Step 5: Solve for x
    x = 14,781,769,997.76/111,811.20
  6. Step 6: Final answer
    x = 132,202.95

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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.