Home / 259,714.20-389,474.10-91,169.40

Finding the Fourth Proportional to 259,714.20, 389,474.10 and 91,169.40

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Solution

The fourth proportional to 259,714.20, 389,474.10 and 91,169.40 is: 136,719.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,714.20 : 389,474.10 = 91,169.40 : x
  2. Step 2: Convert to fraction form
    259,714.20/389,474.10 = 91,169.40/x
  3. Step 3: Cross multiply
    259,714.20x = 389,474.10 × 91,169.40
  4. Step 4: Simplify right side
    259,714.20x = 35,508,120,012.54
  5. Step 5: Solve for x
    x = 35,508,120,012.54/259,714.20
  6. Step 6: Final answer
    x = 136,719.98

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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.