Home / 245,581.28-338,921.84-138,144.90

Finding the Fourth Proportional to 245,581.28, 338,921.84 and 138,144.90

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Solution

The fourth proportional to 245,581.28, 338,921.84 and 138,144.90 is: 190,651.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,581.28 : 338,921.84 = 138,144.90 : x
  2. Step 2: Convert to fraction form
    245,581.28/338,921.84 = 138,144.90/x
  3. Step 3: Cross multiply
    245,581.28x = 338,921.84 × 138,144.90
  4. Step 4: Simplify right side
    245,581.28x = 46,820,324,039.98
  5. Step 5: Solve for x
    x = 46,820,324,039.98/245,581.28
  6. Step 6: Final answer
    x = 190,651.03

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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.