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Finding the Fourth Proportional to 186,086.97, 279,239.81 and 67,765.41

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Solution

The fourth proportional to 186,086.97, 279,239.81 and 67,765.41 is: 101,687.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,086.97 : 279,239.81 = 67,765.41 : x
  2. Step 2: Convert to fraction form
    186,086.97/279,239.81 = 67,765.41/x
  3. Step 3: Cross multiply
    186,086.97x = 279,239.81 × 67,765.41
  4. Step 4: Simplify right side
    186,086.97x = 18,922,799,874.15
  5. Step 5: Solve for x
    x = 18,922,799,874.15/186,086.97
  6. Step 6: Final answer
    x = 101,687.94

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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.