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Finding the Fourth Proportional to 192,442.68, 288,664.38 and 74,169.72

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Solution

The fourth proportional to 192,442.68, 288,664.38 and 74,169.72 is: 111,254.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,442.68 : 288,664.38 = 74,169.72 : x
  2. Step 2: Convert to fraction form
    192,442.68/288,664.38 = 74,169.72/x
  3. Step 3: Cross multiply
    192,442.68x = 288,664.38 × 74,169.72
  4. Step 4: Simplify right side
    192,442.68x = 21,410,156,238.57
  5. Step 5: Solve for x
    x = 21,410,156,238.57/192,442.68
  6. Step 6: Final answer
    x = 111,254.72

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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.