Home / 143,760.26-198,390.53-79,231.83

Finding the Fourth Proportional to 143,760.26, 198,390.53 and 79,231.83

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Solution

The fourth proportional to 143,760.26, 198,390.53 and 79,231.83 is: 109,340.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,760.26 : 198,390.53 = 79,231.83 : x
  2. Step 2: Convert to fraction form
    143,760.26/198,390.53 = 79,231.83/x
  3. Step 3: Cross multiply
    143,760.26x = 198,390.53 × 79,231.83
  4. Step 4: Simplify right side
    143,760.26x = 15,718,844,746.57
  5. Step 5: Solve for x
    x = 15,718,844,746.57/143,760.26
  6. Step 6: Final answer
    x = 109,340.68

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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.