Home / 129,974.10-194,633.10-85,359.30

Finding the Fourth Proportional to 129,974.10, 194,633.10 and 85,359.30

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Solution

The fourth proportional to 129,974.10, 194,633.10 and 85,359.30 is: 127,823.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,974.10 : 194,633.10 = 85,359.30 : x
  2. Step 2: Convert to fraction form
    129,974.10/194,633.10 = 85,359.30/x
  3. Step 3: Cross multiply
    129,974.10x = 194,633.10 × 85,359.30
  4. Step 4: Simplify right side
    129,974.10x = 16,613,745,172.83
  5. Step 5: Solve for x
    x = 16,613,745,172.83/129,974.10
  6. Step 6: Final answer
    x = 127,823.51

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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.