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Finding the Fourth Proportional to 144,651.30, 199,616.56 and 80,991.38

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Solution

The fourth proportional to 144,651.30, 199,616.56 and 80,991.38 is: 111,766.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,651.30 : 199,616.56 = 80,991.38 : x
  2. Step 2: Convert to fraction form
    144,651.30/199,616.56 = 80,991.38/x
  3. Step 3: Cross multiply
    144,651.30x = 199,616.56 × 80,991.38
  4. Step 4: Simplify right side
    144,651.30x = 16,167,220,665.25
  5. Step 5: Solve for x
    x = 16,167,220,665.25/144,651.30
  6. Step 6: Final answer
    x = 111,766.85

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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.