Home / 252,107.28-378,234.82-81,325.58

Finding the Fourth Proportional to 252,107.28, 378,234.82 and 81,325.58

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Solution

The fourth proportional to 252,107.28, 378,234.82 and 81,325.58 is: 122,012.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,107.28 : 378,234.82 = 81,325.58 : x
  2. Step 2: Convert to fraction form
    252,107.28/378,234.82 = 81,325.58/x
  3. Step 3: Cross multiply
    252,107.28x = 378,234.82 × 81,325.58
  4. Step 4: Simplify right side
    252,107.28x = 30,760,166,112.70
  5. Step 5: Solve for x
    x = 30,760,166,112.70/252,107.28
  6. Step 6: Final answer
    x = 122,012.21

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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.