Home / 143,359.38-197,789.76-79,684.92

Finding the Fourth Proportional to 143,359.38, 197,789.76 and 79,684.92

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Solution

The fourth proportional to 143,359.38, 197,789.76 and 79,684.92 is: 109,939.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,359.38 : 197,789.76 = 79,684.92 : x
  2. Step 2: Convert to fraction form
    143,359.38/197,789.76 = 79,684.92/x
  3. Step 3: Cross multiply
    143,359.38x = 197,789.76 × 79,684.92
  4. Step 4: Simplify right side
    143,359.38x = 15,760,861,202.42
  5. Step 5: Solve for x
    x = 15,760,861,202.42/143,359.38
  6. Step 6: Final answer
    x = 109,939.52

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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.