Home / 87,739.20-131,608.80-72,964.80

Finding the Fourth Proportional to 87,739.20, 131,608.80 and 72,964.80

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Solution

The fourth proportional to 87,739.20, 131,608.80 and 72,964.80 is: 109,447.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,739.20 : 131,608.80 = 72,964.80 : x
  2. Step 2: Convert to fraction form
    87,739.20/131,608.80 = 72,964.80/x
  3. Step 3: Cross multiply
    87,739.20x = 131,608.80 × 72,964.80
  4. Step 4: Simplify right side
    87,739.20x = 9,602,809,770.24
  5. Step 5: Solve for x
    x = 9,602,809,770.24/87,739.20
  6. Step 6: Final answer
    x = 109,447.20

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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.