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Finding the Fourth Proportional to 186,004.30, 279,115.80 and 67,687.60

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Solution

The fourth proportional to 186,004.30, 279,115.80 and 67,687.60 is: 101,571.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,004.30 : 279,115.80 = 67,687.60 : x
  2. Step 2: Convert to fraction form
    186,004.30/279,115.80 = 67,687.60/x
  3. Step 3: Cross multiply
    186,004.30x = 279,115.80 × 67,687.60
  4. Step 4: Simplify right side
    186,004.30x = 18,892,678,624.08
  5. Step 5: Solve for x
    x = 18,892,678,624.08/186,004.30
  6. Step 6: Final answer
    x = 101,571.19

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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.