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Finding the Fourth Proportional to 131,787.98, 181,793.13 and 83,374.88

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Solution

The fourth proportional to 131,787.98, 181,793.13 and 83,374.88 is: 115,010.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,787.98 : 181,793.13 = 83,374.88 : x
  2. Step 2: Convert to fraction form
    131,787.98/181,793.13 = 83,374.88/x
  3. Step 3: Cross multiply
    131,787.98x = 181,793.13 × 83,374.88
  4. Step 4: Simplify right side
    131,787.98x = 15,156,980,398.57
  5. Step 5: Solve for x
    x = 15,156,980,398.57/131,787.98
  6. Step 6: Final answer
    x = 115,010.34

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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.