Home / 245,105.11-338,245.23-137,675.20

Finding the Fourth Proportional to 245,105.11, 338,245.23 and 137,675.20

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Solution

The fourth proportional to 245,105.11, 338,245.23 and 137,675.20 is: 189,991.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,105.11 : 338,245.23 = 137,675.20 : x
  2. Step 2: Convert to fraction form
    245,105.11/338,245.23 = 137,675.20/x
  3. Step 3: Cross multiply
    245,105.11x = 338,245.23 × 137,675.20
  4. Step 4: Simplify right side
    245,105.11x = 46,567,979,689.30
  5. Step 5: Solve for x
    x = 46,567,979,689.30/245,105.11
  6. Step 6: Final answer
    x = 189,991.88

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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.