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Finding the Fourth Proportional to 95,909.20, 143,863.80 and 86,723.80

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Solution

The fourth proportional to 95,909.20, 143,863.80 and 86,723.80 is: 130,085.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,909.20 : 143,863.80 = 86,723.80 : x
  2. Step 2: Convert to fraction form
    95,909.20/143,863.80 = 86,723.80/x
  3. Step 3: Cross multiply
    95,909.20x = 143,863.80 × 86,723.80
  4. Step 4: Simplify right side
    95,909.20x = 12,476,415,418.44
  5. Step 5: Solve for x
    x = 12,476,415,418.44/95,909.20
  6. Step 6: Final answer
    x = 130,085.70

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Similar ratio
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1.5x scale

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.