Home / 143,309.13-197,774.78-79,650.96

Finding the Fourth Proportional to 143,309.13, 197,774.78 and 79,650.96

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Solution

The fourth proportional to 143,309.13, 197,774.78 and 79,650.96 is: 109,922.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,309.13 : 197,774.78 = 79,650.96 : x
  2. Step 2: Convert to fraction form
    143,309.13/197,774.78 = 79,650.96/x
  3. Step 3: Cross multiply
    143,309.13x = 197,774.78 × 79,650.96
  4. Step 4: Simplify right side
    143,309.13x = 15,752,951,090.79
  5. Step 5: Solve for x
    x = 15,752,951,090.79/143,309.13
  6. Step 6: Final answer
    x = 109,922.87

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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.