Home / 139,512.82-209,231.20-38,286.88

Finding the Fourth Proportional to 139,512.82, 209,231.20 and 38,286.88

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Solution

The fourth proportional to 139,512.82, 209,231.20 and 38,286.88 is: 57,419.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,512.82 : 209,231.20 = 38,286.88 : x
  2. Step 2: Convert to fraction form
    139,512.82/209,231.20 = 38,286.88/x
  3. Step 3: Cross multiply
    139,512.82x = 209,231.20 × 38,286.88
  4. Step 4: Simplify right side
    139,512.82x = 8,010,809,846.66
  5. Step 5: Solve for x
    x = 8,010,809,846.66/139,512.82
  6. Step 6: Final answer
    x = 57,419.88

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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.