Home / 138,282.94-207,378.25-54,021.27

Finding the Fourth Proportional to 138,282.94, 207,378.25 and 54,021.27

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Solution

The fourth proportional to 138,282.94, 207,378.25 and 54,021.27 is: 81,013.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,282.94 : 207,378.25 = 54,021.27 : x
  2. Step 2: Convert to fraction form
    138,282.94/207,378.25 = 54,021.27/x
  3. Step 3: Cross multiply
    138,282.94x = 207,378.25 × 54,021.27
  4. Step 4: Simplify right side
    138,282.94x = 11,202,836,435.38
  5. Step 5: Solve for x
    x = 11,202,836,435.38/138,282.94
  6. Step 6: Final answer
    x = 81,013.87

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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.