Home / 138,220.11-207,286.02-53,959.86

Finding the Fourth Proportional to 138,220.11, 207,286.02 and 53,959.86

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Solution

The fourth proportional to 138,220.11, 207,286.02 and 53,959.86 is: 80,922.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,220.11 : 207,286.02 = 53,959.86 : x
  2. Step 2: Convert to fraction form
    138,220.11/207,286.02 = 53,959.86/x
  3. Step 3: Cross multiply
    138,220.11x = 207,286.02 × 53,959.86
  4. Step 4: Simplify right side
    138,220.11x = 11,185,124,619.16
  5. Step 5: Solve for x
    x = 11,185,124,619.16/138,220.11
  6. Step 6: Final answer
    x = 80,922.56

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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.