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Finding the Fourth Proportional to 192,708.20, 289,062.30 and 68,061.80

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Solution

The fourth proportional to 192,708.20, 289,062.30 and 68,061.80 is: 102,092.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,708.20 : 289,062.30 = 68,061.80 : x
  2. Step 2: Convert to fraction form
    192,708.20/289,062.30 = 68,061.80/x
  3. Step 3: Cross multiply
    192,708.20x = 289,062.30 × 68,061.80
  4. Step 4: Simplify right side
    192,708.20x = 19,674,100,450.14
  5. Step 5: Solve for x
    x = 19,674,100,450.14/192,708.20
  6. Step 6: Final answer
    x = 102,092.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.