Home / 143,373.28-197,843.92-79,707.20

Finding the Fourth Proportional to 143,373.28, 197,843.92 and 79,707.20

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Solution

The fourth proportional to 143,373.28, 197,843.92 and 79,707.20 is: 109,989.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,373.28 : 197,843.92 = 79,707.20 : x
  2. Step 2: Convert to fraction form
    143,373.28/197,843.92 = 79,707.20/x
  3. Step 3: Cross multiply
    143,373.28x = 197,843.92 × 79,707.20
  4. Step 4: Simplify right side
    143,373.28x = 15,769,584,900.22
  5. Step 5: Solve for x
    x = 15,769,584,900.22/143,373.28
  6. Step 6: Final answer
    x = 109,989.71

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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.