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Finding the Fourth Proportional to 138,147, 207,220.50 and 44,652.75

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Solution

The fourth proportional to 138,147, 207,220.50 and 44,652.75 is: 66,979.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,147 : 207,220.50 = 44,652.75 : x
  2. Step 2: Convert to fraction form
    138,147/207,220.50 = 44,652.75/x
  3. Step 3: Cross multiply
    138,147x = 207,220.50 × 44,652.75
  4. Step 4: Simplify right side
    138,147x = 9,252,965,181.38
  5. Step 5: Solve for x
    x = 9,252,965,181.38/138,147
  6. Step 6: Final answer
    x = 66,979.13

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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.