Home / 138,250.80-207,402.66-54,007.56

Finding the Fourth Proportional to 138,250.80, 207,402.66 and 54,007.56

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Solution

The fourth proportional to 138,250.80, 207,402.66 and 54,007.56 is: 81,021.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,250.80 : 207,402.66 = 54,007.56 : x
  2. Step 2: Convert to fraction form
    138,250.80/207,402.66 = 54,007.56/x
  3. Step 3: Cross multiply
    138,250.80x = 207,402.66 × 54,007.56
  4. Step 4: Simplify right side
    138,250.80x = 11,201,311,604.11
  5. Step 5: Solve for x
    x = 11,201,311,604.11/138,250.80
  6. Step 6: Final answer
    x = 81,021.68

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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.