Home / 138,355.18-207,270.27-82,076.38

Finding the Fourth Proportional to 138,355.18, 207,270.27 and 82,076.38

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Solution

The fourth proportional to 138,355.18, 207,270.27 and 82,076.38 is: 122,958.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,355.18 : 207,270.27 = 82,076.38 : x
  2. Step 2: Convert to fraction form
    138,355.18/207,270.27 = 82,076.38/x
  3. Step 3: Cross multiply
    138,355.18x = 207,270.27 × 82,076.38
  4. Step 4: Simplify right side
    138,355.18x = 17,011,993,443.22
  5. Step 5: Solve for x
    x = 17,011,993,443.22/138,355.18
  6. Step 6: Final answer
    x = 122,958.85

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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.