Home / 245,022.80-338,105.16-137,604.56

Finding the Fourth Proportional to 245,022.80, 338,105.16 and 137,604.56

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Solution

The fourth proportional to 245,022.80, 338,105.16 and 137,604.56 is: 189,879.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,022.80 : 338,105.16 = 137,604.56 : x
  2. Step 2: Convert to fraction form
    245,022.80/338,105.16 = 137,604.56/x
  3. Step 3: Cross multiply
    245,022.80x = 338,105.16 × 137,604.56
  4. Step 4: Simplify right side
    245,022.80x = 46,524,811,775.53
  5. Step 5: Solve for x
    x = 46,524,811,775.53/245,022.80
  6. Step 6: Final answer
    x = 189,879.52

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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.