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Finding the Fourth Proportional to 113,750.78, 156,976.02 and 63,449.78

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Solution

The fourth proportional to 113,750.78, 156,976.02 and 63,449.78 is: 87,560.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,750.78 : 156,976.02 = 63,449.78 : x
  2. Step 2: Convert to fraction form
    113,750.78/156,976.02 = 63,449.78/x
  3. Step 3: Cross multiply
    113,750.78x = 156,976.02 × 63,449.78
  4. Step 4: Simplify right side
    113,750.78x = 9,960,093,934.28
  5. Step 5: Solve for x
    x = 9,960,093,934.28/113,750.78
  6. Step 6: Final answer
    x = 87,560.66

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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.