Home / 143,768.88-198,398.42-80,105.30

Finding the Fourth Proportional to 143,768.88, 198,398.42 and 80,105.30

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Solution

The fourth proportional to 143,768.88, 198,398.42 and 80,105.30 is: 110,543.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,768.88 : 198,398.42 = 80,105.30 : x
  2. Step 2: Convert to fraction form
    143,768.88/198,398.42 = 80,105.30/x
  3. Step 3: Cross multiply
    143,768.88x = 198,398.42 × 80,105.30
  4. Step 4: Simplify right side
    143,768.88x = 15,892,764,953.63
  5. Step 5: Solve for x
    x = 15,892,764,953.63/143,768.88
  6. Step 6: Final answer
    x = 110,543.85

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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.