Home / 90,966.82-136,469.68-68,789.02

Finding the Fourth Proportional to 90,966.82, 136,469.68 and 68,789.02

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Solution

The fourth proportional to 90,966.82, 136,469.68 and 68,789.02 is: 103,198.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,966.82 : 136,469.68 = 68,789.02 : x
  2. Step 2: Convert to fraction form
    90,966.82/136,469.68 = 68,789.02/x
  3. Step 3: Cross multiply
    90,966.82x = 136,469.68 × 68,789.02
  4. Step 4: Simplify right side
    90,966.82x = 9,387,615,546.91
  5. Step 5: Solve for x
    x = 9,387,615,546.91/90,966.82
  6. Step 6: Final answer
    x = 103,198.24

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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.