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Finding the Fourth Proportional to 113,067.20, 169,600.80 and 100,236.80

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Solution

The fourth proportional to 113,067.20, 169,600.80 and 100,236.80 is: 150,355.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,067.20 : 169,600.80 = 100,236.80 : x
  2. Step 2: Convert to fraction form
    113,067.20/169,600.80 = 100,236.80/x
  3. Step 3: Cross multiply
    113,067.20x = 169,600.80 × 100,236.80
  4. Step 4: Simplify right side
    113,067.20x = 17,000,241,469.44
  5. Step 5: Solve for x
    x = 17,000,241,469.44/113,067.20
  6. Step 6: Final answer
    x = 150,355.20

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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.