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Finding the Fourth Proportional to 121,471.91, 167,631.49 and 67,755.54

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Solution

The fourth proportional to 121,471.91, 167,631.49 and 67,755.54 is: 93,502.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,471.91 : 167,631.49 = 67,755.54 : x
  2. Step 2: Convert to fraction form
    121,471.91/167,631.49 = 67,755.54/x
  3. Step 3: Cross multiply
    121,471.91x = 167,631.49 × 67,755.54
  4. Step 4: Simplify right side
    121,471.91x = 11,357,962,125.95
  5. Step 5: Solve for x
    x = 11,357,962,125.95/121,471.91
  6. Step 6: Final answer
    x = 93,502.79

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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.