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Finding the Fourth Proportional to 95,531.20, 143,296.80 and 86,345.80

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Solution

The fourth proportional to 95,531.20, 143,296.80 and 86,345.80 is: 129,518.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,531.20 : 143,296.80 = 86,345.80 : x
  2. Step 2: Convert to fraction form
    95,531.20/143,296.80 = 86,345.80/x
  3. Step 3: Cross multiply
    95,531.20x = 143,296.80 × 86,345.80
  4. Step 4: Simplify right side
    95,531.20x = 12,373,076,833.44
  5. Step 5: Solve for x
    x = 12,373,076,833.44/95,531.20
  6. Step 6: Final answer
    x = 129,518.70

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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.