Home / 143,363.20-197,843.68-78,835.20

Finding the Fourth Proportional to 143,363.20, 197,843.68 and 78,835.20

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Solution

The fourth proportional to 143,363.20, 197,843.68 and 78,835.20 is: 108,793.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,363.20 : 197,843.68 = 78,835.20 : x
  2. Step 2: Convert to fraction form
    143,363.20/197,843.68 = 78,835.20/x
  3. Step 3: Cross multiply
    143,363.20x = 197,843.68 × 78,835.20
  4. Step 4: Simplify right side
    143,363.20x = 15,597,046,081.54
  5. Step 5: Solve for x
    x = 15,597,046,081.54/143,363.20
  6. Step 6: Final answer
    x = 108,793.93

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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.