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Finding the Fourth Proportional to 138,147.27, 207,220.91 and 49,395.39

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Solution

The fourth proportional to 138,147.27, 207,220.91 and 49,395.39 is: 74,093.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,147.27 : 207,220.91 = 49,395.39 : x
  2. Step 2: Convert to fraction form
    138,147.27/207,220.91 = 49,395.39/x
  3. Step 3: Cross multiply
    138,147.27x = 207,220.91 × 49,395.39
  4. Step 4: Simplify right side
    138,147.27x = 10,235,758,195.71
  5. Step 5: Solve for x
    x = 10,235,758,195.71/138,147.27
  6. Step 6: Final answer
    x = 74,093.09

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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.