Home / 143,861.22-198,528.71-80,197.65

Finding the Fourth Proportional to 143,861.22, 198,528.71 and 80,197.65

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Solution

The fourth proportional to 143,861.22, 198,528.71 and 80,197.65 is: 110,672.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,861.22 : 198,528.71 = 80,197.65 : x
  2. Step 2: Convert to fraction form
    143,861.22/198,528.71 = 80,197.65/x
  3. Step 3: Cross multiply
    143,861.22x = 198,528.71 × 80,197.65
  4. Step 4: Simplify right side
    143,861.22x = 15,921,535,598.54
  5. Step 5: Solve for x
    x = 15,921,535,598.54/143,861.22
  6. Step 6: Final answer
    x = 110,672.88

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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.