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Finding the Fourth Proportional to 144,309.71, 199,144.09 and 80,653.43

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Solution

The fourth proportional to 144,309.71, 199,144.09 and 80,653.43 is: 111,299.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,309.71 : 199,144.09 = 80,653.43 : x
  2. Step 2: Convert to fraction form
    144,309.71/199,144.09 = 80,653.43/x
  3. Step 3: Cross multiply
    144,309.71x = 199,144.09 × 80,653.43
  4. Step 4: Simplify right side
    144,309.71x = 16,061,653,922.73
  5. Step 5: Solve for x
    x = 16,061,653,922.73/144,309.71
  6. Step 6: Final answer
    x = 111,299.88

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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.