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Finding the Fourth Proportional to 186,958.64, 280,474.92 and 68,631

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Solution

The fourth proportional to 186,958.64, 280,474.92 and 68,631 is: 102,960.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,958.64 : 280,474.92 = 68,631 : x
  2. Step 2: Convert to fraction form
    186,958.64/280,474.92 = 68,631/x
  3. Step 3: Cross multiply
    186,958.64x = 280,474.92 × 68,631
  4. Step 4: Simplify right side
    186,958.64x = 19,249,274,234.52
  5. Step 5: Solve for x
    x = 19,249,274,234.52/186,958.64
  6. Step 6: Final answer
    x = 102,960.07

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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.