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Finding the Fourth Proportional to 119,910.47, 165,472.11 and 66,194.34

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Solution

The fourth proportional to 119,910.47, 165,472.11 and 66,194.34 is: 91,345.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,910.47 : 165,472.11 = 66,194.34 : x
  2. Step 2: Convert to fraction form
    119,910.47/165,472.11 = 66,194.34/x
  3. Step 3: Cross multiply
    119,910.47x = 165,472.11 × 66,194.34
  4. Step 4: Simplify right side
    119,910.47x = 10,953,317,109.86
  5. Step 5: Solve for x
    x = 10,953,317,109.86/119,910.47
  6. Step 6: Final answer
    x = 91,345.79

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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.