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Finding the Fourth Proportional to 144,640.56, 199,611.48 and 80,974.56

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Solution

The fourth proportional to 144,640.56, 199,611.48 and 80,974.56 is: 111,749.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,640.56 : 199,611.48 = 80,974.56 : x
  2. Step 2: Convert to fraction form
    144,640.56/199,611.48 = 80,974.56/x
  3. Step 3: Cross multiply
    144,640.56x = 199,611.48 × 80,974.56
  4. Step 4: Simplify right side
    144,640.56x = 16,163,451,763.95
  5. Step 5: Solve for x
    x = 16,163,451,763.95/144,640.56
  6. Step 6: Final answer
    x = 111,749.10

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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.