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Finding the Fourth Proportional to 143,847.88, 198,512.76 and 80,178.94

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Solution

The fourth proportional to 143,847.88, 198,512.76 and 80,178.94 is: 110,648.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,847.88 : 198,512.76 = 80,178.94 : x
  2. Step 2: Convert to fraction form
    143,847.88/198,512.76 = 80,178.94/x
  3. Step 3: Cross multiply
    143,847.88x = 198,512.76 × 80,178.94
  4. Step 4: Simplify right side
    143,847.88x = 15,916,542,673.27
  5. Step 5: Solve for x
    x = 15,916,542,673.27/143,847.88
  6. Step 6: Final answer
    x = 110,648.43

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1.5x scale

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.