Home / 259,712.20-389,471.10-91,167.40

Finding the Fourth Proportional to 259,712.20, 389,471.10 and 91,167.40

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Solution

The fourth proportional to 259,712.20, 389,471.10 and 91,167.40 is: 136,716.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,712.20 : 389,471.10 = 91,167.40 : x
  2. Step 2: Convert to fraction form
    259,712.20/389,471.10 = 91,167.40/x
  3. Step 3: Cross multiply
    259,712.20x = 389,471.10 × 91,167.40
  4. Step 4: Simplify right side
    259,712.20x = 35,507,067,562.14
  5. Step 5: Solve for x
    x = 35,507,067,562.14/259,712.20
  6. Step 6: Final answer
    x = 136,716.98

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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.