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Finding the Fourth Proportional to 159,642.68, 220,191.11 and 108,564.62

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Solution

The fourth proportional to 159,642.68, 220,191.11 and 108,564.62 is: 149,740.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,642.68 : 220,191.11 = 108,564.62 : x
  2. Step 2: Convert to fraction form
    159,642.68/220,191.11 = 108,564.62/x
  3. Step 3: Cross multiply
    159,642.68x = 220,191.11 × 108,564.62
  4. Step 4: Simplify right side
    159,642.68x = 23,904,962,540.75
  5. Step 5: Solve for x
    x = 23,904,962,540.75/159,642.68
  6. Step 6: Final answer
    x = 149,740.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.