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Finding the Fourth Proportional to 159,524.61, 220,149 and 91,554

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Solution

The fourth proportional to 159,524.61, 220,149 and 91,554 is: 126,347.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,524.61 : 220,149 = 91,554 : x
  2. Step 2: Convert to fraction form
    159,524.61/220,149 = 91,554/x
  3. Step 3: Cross multiply
    159,524.61x = 220,149 × 91,554
  4. Step 4: Simplify right side
    159,524.61x = 20,155,521,546
  5. Step 5: Solve for x
    x = 20,155,521,546/159,524.61
  6. Step 6: Final answer
    x = 126,347.41

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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.