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Finding the Fourth Proportional to 119,779.52, 165,286.56 and 66,066.56

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Solution

The fourth proportional to 119,779.52, 165,286.56 and 66,066.56 is: 91,166.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,779.52 : 165,286.56 = 66,066.56 : x
  2. Step 2: Convert to fraction form
    119,779.52/165,286.56 = 66,066.56/x
  3. Step 3: Cross multiply
    119,779.52x = 165,286.56 × 66,066.56
  4. Step 4: Simplify right side
    119,779.52x = 10,919,914,433.43
  5. Step 5: Solve for x
    x = 10,919,914,433.43/119,779.52
  6. Step 6: Final answer
    x = 91,166.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.