Home / 129,853.40-194,780.10-123,729.80

Finding the Fourth Proportional to 129,853.40, 194,780.10 and 123,729.80

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Solution

The fourth proportional to 129,853.40, 194,780.10 and 123,729.80 is: 185,594.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,853.40 : 194,780.10 = 123,729.80 : x
  2. Step 2: Convert to fraction form
    129,853.40/194,780.10 = 123,729.80/x
  3. Step 3: Cross multiply
    129,853.40x = 194,780.10 × 123,729.80
  4. Step 4: Simplify right side
    129,853.40x = 24,100,102,816.98
  5. Step 5: Solve for x
    x = 24,100,102,816.98/129,853.40
  6. Step 6: Final answer
    x = 185,594.70

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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.