Home / 143,391.60-197,882.67-78,863.64

Finding the Fourth Proportional to 143,391.60, 197,882.67 and 78,863.64

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Solution

The fourth proportional to 143,391.60, 197,882.67 and 78,863.64 is: 108,833.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,391.60 : 197,882.67 = 78,863.64 : x
  2. Step 2: Convert to fraction form
    143,391.60/197,882.67 = 78,863.64/x
  3. Step 3: Cross multiply
    143,391.60x = 197,882.67 × 78,863.64
  4. Step 4: Simplify right side
    143,391.60x = 15,605,747,649.12
  5. Step 5: Solve for x
    x = 15,605,747,649.12/143,391.60
  6. Step 6: Final answer
    x = 108,833.07

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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.