Home / 87,601.60-131,370-68,918.08

Finding the Fourth Proportional to 87,601.60, 131,370 and 68,918.08

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Solution

The fourth proportional to 87,601.60, 131,370 and 68,918.08 is: 103,351.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,601.60 : 131,370 = 68,918.08 : x
  2. Step 2: Convert to fraction form
    87,601.60/131,370 = 68,918.08/x
  3. Step 3: Cross multiply
    87,601.60x = 131,370 × 68,918.08
  4. Step 4: Simplify right side
    87,601.60x = 9,053,768,169.60
  5. Step 5: Solve for x
    x = 9,053,768,169.60/87,601.60
  6. Step 6: Final answer
    x = 103,351.63

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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.