Home / 231,047.30-318,841.76-129,074.22

Finding the Fourth Proportional to 231,047.30, 318,841.76 and 129,074.22

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Solution

The fourth proportional to 231,047.30, 318,841.76 and 129,074.22 is: 178,120.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,047.30 : 318,841.76 = 129,074.22 : x
  2. Step 2: Convert to fraction form
    231,047.30/318,841.76 = 129,074.22/x
  3. Step 3: Cross multiply
    231,047.30x = 318,841.76 × 129,074.22
  4. Step 4: Simplify right side
    231,047.30x = 41,154,251,475.43
  5. Step 5: Solve for x
    x = 41,154,251,475.43/231,047.30
  6. Step 6: Final answer
    x = 178,120.46

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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.