Home / 129,778.15-194,573.74-79,754.85

Finding the Fourth Proportional to 129,778.15, 194,573.74 and 79,754.85

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Solution

The fourth proportional to 129,778.15, 194,573.74 and 79,754.85 is: 119,574.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,778.15 : 194,573.74 = 79,754.85 : x
  2. Step 2: Convert to fraction form
    129,778.15/194,573.74 = 79,754.85/x
  3. Step 3: Cross multiply
    129,778.15x = 194,573.74 × 79,754.85
  4. Step 4: Simplify right side
    129,778.15x = 15,518,199,447.64
  5. Step 5: Solve for x
    x = 15,518,199,447.64/129,778.15
  6. Step 6: Final answer
    x = 119,574.82

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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.