Home / 138,766.16-207,962.76-72,067.52

Finding the Fourth Proportional to 138,766.16, 207,962.76 and 72,067.52

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Solution

The fourth proportional to 138,766.16, 207,962.76 and 72,067.52 is: 108,004.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,766.16 : 207,962.76 = 72,067.52 : x
  2. Step 2: Convert to fraction form
    138,766.16/207,962.76 = 72,067.52/x
  3. Step 3: Cross multiply
    138,766.16x = 207,962.76 × 72,067.52
  4. Step 4: Simplify right side
    138,766.16x = 14,987,360,365.56
  5. Step 5: Solve for x
    x = 14,987,360,365.56/138,766.16
  6. Step 6: Final answer
    x = 108,004.43

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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.