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Finding the Fourth Proportional to 117,306.82, 161,879.47 and 69,531.81

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Solution

The fourth proportional to 117,306.82, 161,879.47 and 69,531.81 is: 95,951.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,306.82 : 161,879.47 = 69,531.81 : x
  2. Step 2: Convert to fraction form
    117,306.82/161,879.47 = 69,531.81/x
  3. Step 3: Cross multiply
    117,306.82x = 161,879.47 × 69,531.81
  4. Step 4: Simplify right side
    117,306.82x = 11,255,772,550.94
  5. Step 5: Solve for x
    x = 11,255,772,550.94/117,306.82
  6. Step 6: Final answer
    x = 95,951.56

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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.