Home / 259,711.45-389,517.96-91,192.17

Finding the Fourth Proportional to 259,711.45, 389,517.96 and 91,192.17

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Solution

The fourth proportional to 259,711.45, 389,517.96 and 91,192.17 is: 136,770.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,711.45 : 389,517.96 = 91,192.17 : x
  2. Step 2: Convert to fraction form
    259,711.45/389,517.96 = 91,192.17/x
  3. Step 3: Cross multiply
    259,711.45x = 389,517.96 × 91,192.17
  4. Step 4: Simplify right side
    259,711.45x = 35,520,988,026.37
  5. Step 5: Solve for x
    x = 35,520,988,026.37/259,711.45
  6. Step 6: Final answer
    x = 136,770.97

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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.