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Finding the Fourth Proportional to 186,305.50, 279,499.49 and 67,976.50

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Solution

The fourth proportional to 186,305.50, 279,499.49 and 67,976.50 is: 101,979.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,305.50 : 279,499.49 = 67,976.50 : x
  2. Step 2: Convert to fraction form
    186,305.50/279,499.49 = 67,976.50/x
  3. Step 3: Cross multiply
    186,305.50x = 279,499.49 × 67,976.50
  4. Step 4: Simplify right side
    186,305.50x = 18,999,397,346.39
  5. Step 5: Solve for x
    x = 18,999,397,346.39/186,305.50
  6. Step 6: Final answer
    x = 101,979.80

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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.