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Finding the Fourth Proportional to 144,859.78, 217,245.19 and 100,168.29

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Solution

The fourth proportional to 144,859.78, 217,245.19 and 100,168.29 is: 150,221.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,859.78 : 217,245.19 = 100,168.29 : x
  2. Step 2: Convert to fraction form
    144,859.78/217,245.19 = 100,168.29/x
  3. Step 3: Cross multiply
    144,859.78x = 217,245.19 × 100,168.29
  4. Step 4: Simplify right side
    144,859.78x = 21,761,079,193.03
  5. Step 5: Solve for x
    x = 21,761,079,193.03/144,859.78
  6. Step 6: Final answer
    x = 150,221.68

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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.