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Finding the Fourth Proportional to 143,893.60, 198,563.84 and 80,227.60

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Solution

The fourth proportional to 143,893.60, 198,563.84 and 80,227.60 is: 110,708.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,893.60 : 198,563.84 = 80,227.60 : x
  2. Step 2: Convert to fraction form
    143,893.60/198,563.84 = 80,227.60/x
  3. Step 3: Cross multiply
    143,893.60x = 198,563.84 × 80,227.60
  4. Step 4: Simplify right side
    143,893.60x = 15,930,300,329.98
  5. Step 5: Solve for x
    x = 15,930,300,329.98/143,893.60
  6. Step 6: Final answer
    x = 110,708.89

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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.