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Finding the Fourth Proportional to 122,591.61, 169,193.48 and 68,880.78

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Solution

The fourth proportional to 122,591.61, 169,193.48 and 68,880.78 is: 95,065.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,591.61 : 169,193.48 = 68,880.78 : x
  2. Step 2: Convert to fraction form
    122,591.61/169,193.48 = 68,880.78/x
  3. Step 3: Cross multiply
    122,591.61x = 169,193.48 × 68,880.78
  4. Step 4: Simplify right side
    122,591.61x = 11,654,178,528.91
  5. Step 5: Solve for x
    x = 11,654,178,528.91/122,591.61
  6. Step 6: Final answer
    x = 95,065.06

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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.