Home / 87,136.60-130,359.30-75,578.20

Finding the Fourth Proportional to 87,136.60, 130,359.30 and 75,578.20

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Solution

The fourth proportional to 87,136.60, 130,359.30 and 75,578.20 is: 113,067.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,136.60 : 130,359.30 = 75,578.20 : x
  2. Step 2: Convert to fraction form
    87,136.60/130,359.30 = 75,578.20/x
  3. Step 3: Cross multiply
    87,136.60x = 130,359.30 × 75,578.20
  4. Step 4: Simplify right side
    87,136.60x = 9,852,321,247.26
  5. Step 5: Solve for x
    x = 9,852,321,247.26/87,136.60
  6. Step 6: Final answer
    x = 113,067.54

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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.