Home / 129,815.40-194,723.10-79,951.80

Finding the Fourth Proportional to 129,815.40, 194,723.10 and 79,951.80

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Solution

The fourth proportional to 129,815.40, 194,723.10 and 79,951.80 is: 119,927.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,815.40 : 194,723.10 = 79,951.80 : x
  2. Step 2: Convert to fraction form
    129,815.40/194,723.10 = 79,951.80/x
  3. Step 3: Cross multiply
    129,815.40x = 194,723.10 × 79,951.80
  4. Step 4: Simplify right side
    129,815.40x = 15,568,462,346.58
  5. Step 5: Solve for x
    x = 15,568,462,346.58/129,815.40
  6. Step 6: Final answer
    x = 119,927.70

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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.