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Finding the Fourth Proportional to 192,481.38, 288,650.16 and 66,085.74

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Solution

The fourth proportional to 192,481.38, 288,650.16 and 66,085.74 is: 99,103.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,481.38 : 288,650.16 = 66,085.74 : x
  2. Step 2: Convert to fraction form
    192,481.38/288,650.16 = 66,085.74/x
  3. Step 3: Cross multiply
    192,481.38x = 288,650.16 × 66,085.74
  4. Step 4: Simplify right side
    192,481.38x = 19,075,659,424.72
  5. Step 5: Solve for x
    x = 19,075,659,424.72/192,481.38
  6. Step 6: Final answer
    x = 99,103.92

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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.