Home / 259,625.40-389,474.55-82,113.90

Finding the Fourth Proportional to 259,625.40, 389,474.55 and 82,113.90

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Solution

The fourth proportional to 259,625.40, 389,474.55 and 82,113.90 is: 123,182.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,625.40 : 389,474.55 = 82,113.90 : x
  2. Step 2: Convert to fraction form
    259,625.40/389,474.55 = 82,113.90/x
  3. Step 3: Cross multiply
    259,625.40x = 389,474.55 × 82,113.90
  4. Step 4: Simplify right side
    259,625.40x = 31,981,274,251.25
  5. Step 5: Solve for x
    x = 31,981,274,251.25/259,625.40
  6. Step 6: Final answer
    x = 123,182.38

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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.