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Finding the Fourth Proportional to 154,753.96, 213,560.10 and 87,685.96

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Solution

The fourth proportional to 154,753.96, 213,560.10 and 87,685.96 is: 121,006.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,753.96 : 213,560.10 = 87,685.96 : x
  2. Step 2: Convert to fraction form
    154,753.96/213,560.10 = 87,685.96/x
  3. Step 3: Cross multiply
    154,753.96x = 213,560.10 × 87,685.96
  4. Step 4: Simplify right side
    154,753.96x = 18,726,222,386.20
  5. Step 5: Solve for x
    x = 18,726,222,386.20/154,753.96
  6. Step 6: Final answer
    x = 121,006.42

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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.