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Finding the Fourth Proportional to 186,021.56, 278,863.59 and 67,609.28

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Solution

The fourth proportional to 186,021.56, 278,863.59 and 67,609.28 is: 101,352.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,021.56 : 278,863.59 = 67,609.28 : x
  2. Step 2: Convert to fraction form
    186,021.56/278,863.59 = 67,609.28/x
  3. Step 3: Cross multiply
    186,021.56x = 278,863.59 × 67,609.28
  4. Step 4: Simplify right side
    186,021.56x = 18,853,766,538.12
  5. Step 5: Solve for x
    x = 18,853,766,538.12/186,021.56
  6. Step 6: Final answer
    x = 101,352.59

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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.