Home / 143,530.38-198,069.30-79,867.62

Finding the Fourth Proportional to 143,530.38, 198,069.30 and 79,867.62

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Solution

The fourth proportional to 143,530.38, 198,069.30 and 79,867.62 is: 110,215.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,530.38 : 198,069.30 = 79,867.62 : x
  2. Step 2: Convert to fraction form
    143,530.38/198,069.30 = 79,867.62/x
  3. Step 3: Cross multiply
    143,530.38x = 198,069.30 × 79,867.62
  4. Step 4: Simplify right side
    143,530.38x = 15,819,323,586.07
  5. Step 5: Solve for x
    x = 15,819,323,586.07/143,530.38
  6. Step 6: Final answer
    x = 110,215.86

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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.