Home / 87,648.40-131,472.60-76,934.80

Finding the Fourth Proportional to 87,648.40, 131,472.60 and 76,934.80

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Solution

The fourth proportional to 87,648.40, 131,472.60 and 76,934.80 is: 115,402.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,648.40 : 131,472.60 = 76,934.80 : x
  2. Step 2: Convert to fraction form
    87,648.40/131,472.60 = 76,934.80/x
  3. Step 3: Cross multiply
    87,648.40x = 131,472.60 × 76,934.80
  4. Step 4: Simplify right side
    87,648.40x = 10,114,818,186.48
  5. Step 5: Solve for x
    x = 10,114,818,186.48/87,648.40
  6. Step 6: Final answer
    x = 115,402.20

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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.