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Finding the Fourth Proportional to 186,310.67, 279,470.59 and 67,981.98

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Solution

The fourth proportional to 186,310.67, 279,470.59 and 67,981.98 is: 101,974.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,310.67 : 279,470.59 = 67,981.98 : x
  2. Step 2: Convert to fraction form
    186,310.67/279,470.59 = 67,981.98/x
  3. Step 3: Cross multiply
    186,310.67x = 279,470.59 × 67,981.98
  4. Step 4: Simplify right side
    186,310.67x = 18,998,964,938.03
  5. Step 5: Solve for x
    x = 18,998,964,938.03/186,310.67
  6. Step 6: Final answer
    x = 101,974.65

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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.