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Finding the Fourth Proportional to 192,515.78, 288,822.87 and 74,155.34

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Solution

The fourth proportional to 192,515.78, 288,822.87 and 74,155.34 is: 111,251.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,515.78 : 288,822.87 = 74,155.34 : x
  2. Step 2: Convert to fraction form
    192,515.78/288,822.87 = 74,155.34/x
  3. Step 3: Cross multiply
    192,515.78x = 288,822.87 × 74,155.34
  4. Step 4: Simplify right side
    192,515.78x = 21,417,756,680.51
  5. Step 5: Solve for x
    x = 21,417,756,680.51/192,515.78
  6. Step 6: Final answer
    x = 111,251.96

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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.