Home / 143,865.88-198,535.78-80,207.72

Finding the Fourth Proportional to 143,865.88, 198,535.78 and 80,207.72

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Solution

The fourth proportional to 143,865.88, 198,535.78 and 80,207.72 is: 110,687.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,865.88 : 198,535.78 = 80,207.72 : x
  2. Step 2: Convert to fraction form
    143,865.88/198,535.78 = 80,207.72/x
  3. Step 3: Cross multiply
    143,865.88x = 198,535.78 × 80,207.72
  4. Step 4: Simplify right side
    143,865.88x = 15,924,102,252.22
  5. Step 5: Solve for x
    x = 15,924,102,252.22/143,865.88
  6. Step 6: Final answer
    x = 110,687.14

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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.