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Finding the Fourth Proportional to 138,276.73, 207,486.18 and 119,676.30

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Solution

The fourth proportional to 138,276.73, 207,486.18 and 119,676.30 is: 179,575.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,276.73 : 207,486.18 = 119,676.30 : x
  2. Step 2: Convert to fraction form
    138,276.73/207,486.18 = 119,676.30/x
  3. Step 3: Cross multiply
    138,276.73x = 207,486.18 × 119,676.30
  4. Step 4: Simplify right side
    138,276.73x = 24,831,177,545.46
  5. Step 5: Solve for x
    x = 24,831,177,545.46/138,276.73
  6. Step 6: Final answer
    x = 179,575.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.