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Finding the Fourth Proportional to 115,604.52, 159,487.02 and 91,635

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Solution

The fourth proportional to 115,604.52, 159,487.02 and 91,635 is: 126,418.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,604.52 : 159,487.02 = 91,635 : x
  2. Step 2: Convert to fraction form
    115,604.52/159,487.02 = 91,635/x
  3. Step 3: Cross multiply
    115,604.52x = 159,487.02 × 91,635
  4. Step 4: Simplify right side
    115,604.52x = 14,614,593,077.70
  5. Step 5: Solve for x
    x = 14,614,593,077.70/115,604.52
  6. Step 6: Final answer
    x = 126,418.87

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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.