Home / 263,139.10-394,712.34-85,647.04

Finding the Fourth Proportional to 263,139.10, 394,712.34 and 85,647.04

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Solution

The fourth proportional to 263,139.10, 394,712.34 and 85,647.04 is: 128,471.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,139.10 : 394,712.34 = 85,647.04 : x
  2. Step 2: Convert to fraction form
    263,139.10/394,712.34 = 85,647.04/x
  3. Step 3: Cross multiply
    263,139.10x = 394,712.34 × 85,647.04
  4. Step 4: Simplify right side
    263,139.10x = 33,805,943,572.47
  5. Step 5: Solve for x
    x = 33,805,943,572.47/263,139.10
  6. Step 6: Final answer
    x = 128,471.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.