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Finding the Fourth Proportional to 122,794.53, 169,360.47 and 79,787.88

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Solution

The fourth proportional to 122,794.53, 169,360.47 and 79,787.88 is: 110,044.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,794.53 : 169,360.47 = 79,787.88 : x
  2. Step 2: Convert to fraction form
    122,794.53/169,360.47 = 79,787.88/x
  3. Step 3: Cross multiply
    122,794.53x = 169,360.47 × 79,787.88
  4. Step 4: Simplify right side
    122,794.53x = 13,512,912,857.10
  5. Step 5: Solve for x
    x = 13,512,912,857.10/122,794.53
  6. Step 6: Final answer
    x = 110,044.91

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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.