Home / 231,146.24-318,984-129,179.84

Finding the Fourth Proportional to 231,146.24, 318,984 and 129,179.84

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Solution

The fourth proportional to 231,146.24, 318,984 and 129,179.84 is: 178,269.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,146.24 : 318,984 = 129,179.84 : x
  2. Step 2: Convert to fraction form
    231,146.24/318,984 = 129,179.84/x
  3. Step 3: Cross multiply
    231,146.24x = 318,984 × 129,179.84
  4. Step 4: Simplify right side
    231,146.24x = 41,206,302,082.56
  5. Step 5: Solve for x
    x = 41,206,302,082.56/231,146.24
  6. Step 6: Final answer
    x = 178,269.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.