Home / 143,869.68-198,535.88-79,338.92

Finding the Fourth Proportional to 143,869.68, 198,535.88 and 79,338.92

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Solution

The fourth proportional to 143,869.68, 198,535.88 and 79,338.92 is: 109,485.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,869.68 : 198,535.88 = 79,338.92 : x
  2. Step 2: Convert to fraction form
    143,869.68/198,535.88 = 79,338.92/x
  3. Step 3: Cross multiply
    143,869.68x = 198,535.88 × 79,338.92
  4. Step 4: Simplify right side
    143,869.68x = 15,751,621,506.12
  5. Step 5: Solve for x
    x = 15,751,621,506.12/143,869.68
  6. Step 6: Final answer
    x = 109,485.34

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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.