Home / 129,863.20-194,780.40-106,448.80

Finding the Fourth Proportional to 129,863.20, 194,780.40 and 106,448.80

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Solution

The fourth proportional to 129,863.20, 194,780.40 and 106,448.80 is: 159,661.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,863.20 : 194,780.40 = 106,448.80 : x
  2. Step 2: Convert to fraction form
    129,863.20/194,780.40 = 106,448.80/x
  3. Step 3: Cross multiply
    129,863.20x = 194,780.40 × 106,448.80
  4. Step 4: Simplify right side
    129,863.20x = 20,734,139,843.52
  5. Step 5: Solve for x
    x = 20,734,139,843.52/129,863.20
  6. Step 6: Final answer
    x = 159,661.40

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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.