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Finding the Fourth Proportional to 121,892.82, 168,213.17 and 68,182.84

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Solution

The fourth proportional to 121,892.82, 168,213.17 and 68,182.84 is: 94,092.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,892.82 : 168,213.17 = 68,182.84 : x
  2. Step 2: Convert to fraction form
    121,892.82/168,213.17 = 68,182.84/x
  3. Step 3: Cross multiply
    121,892.82x = 168,213.17 × 68,182.84
  4. Step 4: Simplify right side
    121,892.82x = 11,469,250,474.02
  5. Step 5: Solve for x
    x = 11,469,250,474.02/121,892.82
  6. Step 6: Final answer
    x = 94,092.91

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1.5x scale

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.