Home / 129,440.40-194,160.60-76,822.80

Finding the Fourth Proportional to 129,440.40, 194,160.60 and 76,822.80

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Solution

The fourth proportional to 129,440.40, 194,160.60 and 76,822.80 is: 115,234.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,440.40 : 194,160.60 = 76,822.80 : x
  2. Step 2: Convert to fraction form
    129,440.40/194,160.60 = 76,822.80/x
  3. Step 3: Cross multiply
    129,440.40x = 194,160.60 × 76,822.80
  4. Step 4: Simplify right side
    129,440.40x = 14,915,960,941.68
  5. Step 5: Solve for x
    x = 14,915,960,941.68/129,440.40
  6. Step 6: Final answer
    x = 115,234.20

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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.