Home / 100,107.52-138,179.13-57,694.30

Finding the Fourth Proportional to 100,107.52, 138,179.13 and 57,694.30

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Solution

The fourth proportional to 100,107.52, 138,179.13 and 57,694.30 is: 79,635.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,107.52 : 138,179.13 = 57,694.30 : x
  2. Step 2: Convert to fraction form
    100,107.52/138,179.13 = 57,694.30/x
  3. Step 3: Cross multiply
    100,107.52x = 138,179.13 × 57,694.30
  4. Step 4: Simplify right side
    100,107.52x = 7,972,148,179.96
  5. Step 5: Solve for x
    x = 7,972,148,179.96/100,107.52
  6. Step 6: Final answer
    x = 79,635.86

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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.