Home / 138,741.78-207,987.78-49,932.84

Finding the Fourth Proportional to 138,741.78, 207,987.78 and 49,932.84

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Solution

The fourth proportional to 138,741.78, 207,987.78 and 49,932.84 is: 74,854.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,741.78 : 207,987.78 = 49,932.84 : x
  2. Step 2: Convert to fraction form
    138,741.78/207,987.78 = 49,932.84/x
  3. Step 3: Cross multiply
    138,741.78x = 207,987.78 × 49,932.84
  4. Step 4: Simplify right side
    138,741.78x = 10,385,420,540.70
  5. Step 5: Solve for x
    x = 10,385,420,540.70/138,741.78
  6. Step 6: Final answer
    x = 74,854.31

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1.5x scale

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.