Home / 87,628.40-131,442.60-86,706.80

Finding the Fourth Proportional to 87,628.40, 131,442.60 and 86,706.80

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Solution

The fourth proportional to 87,628.40, 131,442.60 and 86,706.80 is: 130,060.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,628.40 : 131,442.60 = 86,706.80 : x
  2. Step 2: Convert to fraction form
    87,628.40/131,442.60 = 86,706.80/x
  3. Step 3: Cross multiply
    87,628.40x = 131,442.60 × 86,706.80
  4. Step 4: Simplify right side
    87,628.40x = 11,396,967,229.68
  5. Step 5: Solve for x
    x = 11,396,967,229.68/87,628.40
  6. Step 6: Final answer
    x = 130,060.20

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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.