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Finding the Fourth Proportional to 138,472.36, 207,708.48 and 33,291.32

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Solution

The fourth proportional to 138,472.36, 207,708.48 and 33,291.32 is: 49,936.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,472.36 : 207,708.48 = 33,291.32 : x
  2. Step 2: Convert to fraction form
    138,472.36/207,708.48 = 33,291.32/x
  3. Step 3: Cross multiply
    138,472.36x = 207,708.48 × 33,291.32
  4. Step 4: Simplify right side
    138,472.36x = 6,914,889,474.39
  5. Step 5: Solve for x
    x = 6,914,889,474.39/138,472.36
  6. Step 6: Final answer
    x = 49,936.97

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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.