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Finding the Fourth Proportional to 119,696.78, 165,179.49 and 65,986.79

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Solution

The fourth proportional to 119,696.78, 165,179.49 and 65,986.79 is: 91,060.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,696.78 : 165,179.49 = 65,986.79 : x
  2. Step 2: Convert to fraction form
    119,696.78/165,179.49 = 65,986.79/x
  3. Step 3: Cross multiply
    119,696.78x = 165,179.49 × 65,986.79
  4. Step 4: Simplify right side
    119,696.78x = 10,899,663,493.04
  5. Step 5: Solve for x
    x = 10,899,663,493.04/119,696.78
  6. Step 6: Final answer
    x = 91,060.63

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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.