Home / 143,869.76-198,535.92-79,338.96

Finding the Fourth Proportional to 143,869.76, 198,535.92 and 79,338.96

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Solution

The fourth proportional to 143,869.76, 198,535.92 and 79,338.96 is: 109,485.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,869.76 : 198,535.92 = 79,338.96 : x
  2. Step 2: Convert to fraction form
    143,869.76/198,535.92 = 79,338.96/x
  3. Step 3: Cross multiply
    143,869.76x = 198,535.92 × 79,338.96
  4. Step 4: Simplify right side
    143,869.76x = 15,751,633,316.27
  5. Step 5: Solve for x
    x = 15,751,633,316.27/143,869.76
  6. Step 6: Final answer
    x = 109,485.37

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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.