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Finding the Fourth Proportional to 144,805.24, 199,839.42 and 81,163.56

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Solution

The fourth proportional to 144,805.24, 199,839.42 and 81,163.56 is: 112,010.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,805.24 : 199,839.42 = 81,163.56 : x
  2. Step 2: Convert to fraction form
    144,805.24/199,839.42 = 81,163.56/x
  3. Step 3: Cross multiply
    144,805.24x = 199,839.42 × 81,163.56
  4. Step 4: Simplify right side
    144,805.24x = 16,219,678,755.54
  5. Step 5: Solve for x
    x = 16,219,678,755.54/144,805.24
  6. Step 6: Final answer
    x = 112,010.30

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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.