Home / 87,014.20-130,521.30-85,847.80

Finding the Fourth Proportional to 87,014.20, 130,521.30 and 85,847.80

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Solution

The fourth proportional to 87,014.20, 130,521.30 and 85,847.80 is: 128,771.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,014.20 : 130,521.30 = 85,847.80 : x
  2. Step 2: Convert to fraction form
    87,014.20/130,521.30 = 85,847.80/x
  3. Step 3: Cross multiply
    87,014.20x = 130,521.30 × 85,847.80
  4. Step 4: Simplify right side
    87,014.20x = 11,204,966,458.14
  5. Step 5: Solve for x
    x = 11,204,966,458.14/87,014.20
  6. Step 6: Final answer
    x = 128,771.70

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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.