Home / 189,819.24-261,951.38-103,780.04

Finding the Fourth Proportional to 189,819.24, 261,951.38 and 103,780.04

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Solution

The fourth proportional to 189,819.24, 261,951.38 and 103,780.04 is: 143,216.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,819.24 : 261,951.38 = 103,780.04 : x
  2. Step 2: Convert to fraction form
    189,819.24/261,951.38 = 103,780.04/x
  3. Step 3: Cross multiply
    189,819.24x = 261,951.38 × 103,780.04
  4. Step 4: Simplify right side
    189,819.24x = 27,185,324,694.46
  5. Step 5: Solve for x
    x = 27,185,324,694.46/189,819.24
  6. Step 6: Final answer
    x = 143,216.91

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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.