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Finding the Fourth Proportional to 116,755.11, 161,112.92 and 65,765.61

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Solution

The fourth proportional to 116,755.11, 161,112.92 and 65,765.61 is: 90,751.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,755.11 : 161,112.92 = 65,765.61 : x
  2. Step 2: Convert to fraction form
    116,755.11/161,112.92 = 65,765.61/x
  3. Step 3: Cross multiply
    116,755.11x = 161,112.92 × 65,765.61
  4. Step 4: Simplify right side
    116,755.11x = 10,595,689,133.85
  5. Step 5: Solve for x
    x = 10,595,689,133.85/116,755.11
  6. Step 6: Final answer
    x = 90,751.40

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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.