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Finding the Fourth Proportional to 83,952.60, 125,928.90 and 68,206.20

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Solution

The fourth proportional to 83,952.60, 125,928.90 and 68,206.20 is: 102,309.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,952.60 : 125,928.90 = 68,206.20 : x
  2. Step 2: Convert to fraction form
    83,952.60/125,928.90 = 68,206.20/x
  3. Step 3: Cross multiply
    83,952.60x = 125,928.90 × 68,206.20
  4. Step 4: Simplify right side
    83,952.60x = 8,589,131,739.18
  5. Step 5: Solve for x
    x = 8,589,131,739.18/83,952.60
  6. Step 6: Final answer
    x = 102,309.30

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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.