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Finding the Fourth Proportional to 115,092.56, 172,606.68 and 72,909.92

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Solution

The fourth proportional to 115,092.56, 172,606.68 and 72,909.92 is: 109,344.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,092.56 : 172,606.68 = 72,909.92 : x
  2. Step 2: Convert to fraction form
    115,092.56/172,606.68 = 72,909.92/x
  3. Step 3: Cross multiply
    115,092.56x = 172,606.68 × 72,909.92
  4. Step 4: Simplify right side
    115,092.56x = 12,584,739,230.27
  5. Step 5: Solve for x
    x = 12,584,739,230.27/115,092.56
  6. Step 6: Final answer
    x = 109,344.51

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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.