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Finding the Fourth Proportional to 192,663.16, 288,806.82 and 80,375.64

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Solution

The fourth proportional to 192,663.16, 288,806.82 and 80,375.64 is: 120,485.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,663.16 : 288,806.82 = 80,375.64 : x
  2. Step 2: Convert to fraction form
    192,663.16/288,806.82 = 80,375.64/x
  3. Step 3: Cross multiply
    192,663.16x = 288,806.82 × 80,375.64
  4. Step 4: Simplify right side
    192,663.16x = 23,213,032,993.86
  5. Step 5: Solve for x
    x = 23,213,032,993.86/192,663.16
  6. Step 6: Final answer
    x = 120,485.06

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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.