Home / 129,974.80-194,962.20-79,455.10

Finding the Fourth Proportional to 129,974.80, 194,962.20 and 79,455.10

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Solution

The fourth proportional to 129,974.80, 194,962.20 and 79,455.10 is: 119,182.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,974.80 : 194,962.20 = 79,455.10 : x
  2. Step 2: Convert to fraction form
    129,974.80/194,962.20 = 79,455.10/x
  3. Step 3: Cross multiply
    129,974.80x = 194,962.20 × 79,455.10
  4. Step 4: Simplify right side
    129,974.80x = 15,490,741,097.22
  5. Step 5: Solve for x
    x = 15,490,741,097.22/129,974.80
  6. Step 6: Final answer
    x = 119,182.65

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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.