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Finding the Fourth Proportional to 143,722.80, 198,343.59 and 80,060.62

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Solution

The fourth proportional to 143,722.80, 198,343.59 and 80,060.62 is: 110,487.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,722.80 : 198,343.59 = 80,060.62 : x
  2. Step 2: Convert to fraction form
    143,722.80/198,343.59 = 80,060.62/x
  3. Step 3: Cross multiply
    143,722.80x = 198,343.59 × 80,060.62
  4. Step 4: Simplify right side
    143,722.80x = 15,879,510,788.43
  5. Step 5: Solve for x
    x = 15,879,510,788.43/143,722.80
  6. Step 6: Final answer
    x = 110,487.07

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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.