Home / 95,426.20-143,139.30-86,240.80

Finding the Fourth Proportional to 95,426.20, 143,139.30 and 86,240.80

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Solution

The fourth proportional to 95,426.20, 143,139.30 and 86,240.80 is: 129,361.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,426.20 : 143,139.30 = 86,240.80 : x
  2. Step 2: Convert to fraction form
    95,426.20/143,139.30 = 86,240.80/x
  3. Step 3: Cross multiply
    95,426.20x = 143,139.30 × 86,240.80
  4. Step 4: Simplify right side
    95,426.20x = 12,344,447,743.44
  5. Step 5: Solve for x
    x = 12,344,447,743.44/95,426.20
  6. Step 6: Final answer
    x = 129,361.20

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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.