Home / 143,879.14-198,545.90-79,359.60

Finding the Fourth Proportional to 143,879.14, 198,545.90 and 79,359.60

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Solution

The fourth proportional to 143,879.14, 198,545.90 and 79,359.60 is: 109,512.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,879.14 : 198,545.90 = 79,359.60 : x
  2. Step 2: Convert to fraction form
    143,879.14/198,545.90 = 79,359.60/x
  3. Step 3: Cross multiply
    143,879.14x = 198,545.90 × 79,359.60
  4. Step 4: Simplify right side
    143,879.14x = 15,756,523,205.64
  5. Step 5: Solve for x
    x = 15,756,523,205.64/143,879.14
  6. Step 6: Final answer
    x = 109,512.22

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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.