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Finding the Fourth Proportional to 119,694.56, 165,177.60 and 65,979.68

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Solution

The fourth proportional to 119,694.56, 165,177.60 and 65,979.68 is: 91,051.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,694.56 : 165,177.60 = 65,979.68 : x
  2. Step 2: Convert to fraction form
    119,694.56/165,177.60 = 65,979.68/x
  3. Step 3: Cross multiply
    119,694.56x = 165,177.60 × 65,979.68
  4. Step 4: Simplify right side
    119,694.56x = 10,898,365,191.17
  5. Step 5: Solve for x
    x = 10,898,365,191.17/119,694.56
  6. Step 6: Final answer
    x = 91,051.47

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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.