Home / 115,257.30-159,067.17-86,918.10

Finding the Fourth Proportional to 115,257.30, 159,067.17 and 86,918.10

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Solution

The fourth proportional to 115,257.30, 159,067.17 and 86,918.10 is: 119,956.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,257.30 : 159,067.17 = 86,918.10 : x
  2. Step 2: Convert to fraction form
    115,257.30/159,067.17 = 86,918.10/x
  3. Step 3: Cross multiply
    115,257.30x = 159,067.17 × 86,918.10
  4. Step 4: Simplify right side
    115,257.30x = 13,825,816,188.78
  5. Step 5: Solve for x
    x = 13,825,816,188.78/115,257.30
  6. Step 6: Final answer
    x = 119,956.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.