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Finding the Fourth Proportional to 119,791.98, 165,322.22 and 66,081.69

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Solution

The fourth proportional to 119,791.98, 165,322.22 and 66,081.69 is: 91,197.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,791.98 : 165,322.22 = 66,081.69 : x
  2. Step 2: Convert to fraction form
    119,791.98/165,322.22 = 66,081.69/x
  3. Step 3: Cross multiply
    119,791.98x = 165,322.22 × 66,081.69
  4. Step 4: Simplify right side
    119,791.98x = 10,924,771,361.74
  5. Step 5: Solve for x
    x = 10,924,771,361.74/119,791.98
  6. Step 6: Final answer
    x = 91,197.85

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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.