Home / 143,930.76-198,619.58-79,402.56

Finding the Fourth Proportional to 143,930.76, 198,619.58 and 79,402.56

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Solution

The fourth proportional to 143,930.76, 198,619.58 and 79,402.56 is: 109,572.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,930.76 : 198,619.58 = 79,402.56 : x
  2. Step 2: Convert to fraction form
    143,930.76/198,619.58 = 79,402.56/x
  3. Step 3: Cross multiply
    143,930.76x = 198,619.58 × 79,402.56
  4. Step 4: Simplify right side
    143,930.76x = 15,770,903,118.12
  5. Step 5: Solve for x
    x = 15,770,903,118.12/143,930.76
  6. Step 6: Final answer
    x = 109,572.85

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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.