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Finding the Fourth Proportional to 117,166.62, 161,691.51 and 65,481.45

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Solution

The fourth proportional to 117,166.62, 161,691.51 and 65,481.45 is: 90,365.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,166.62 : 161,691.51 = 65,481.45 : x
  2. Step 2: Convert to fraction form
    117,166.62/161,691.51 = 65,481.45/x
  3. Step 3: Cross multiply
    117,166.62x = 161,691.51 × 65,481.45
  4. Step 4: Simplify right side
    117,166.62x = 10,587,793,798.37
  5. Step 5: Solve for x
    x = 10,587,793,798.37/117,166.62
  6. Step 6: Final answer
    x = 90,365.28

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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.