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Finding the Fourth Proportional to 121,651.44, 167,881.50 and 67,936.50

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Solution

The fourth proportional to 121,651.44, 167,881.50 and 67,936.50 is: 93,753.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,651.44 : 167,881.50 = 67,936.50 : x
  2. Step 2: Convert to fraction form
    121,651.44/167,881.50 = 67,936.50/x
  3. Step 3: Cross multiply
    121,651.44x = 167,881.50 × 67,936.50
  4. Step 4: Simplify right side
    121,651.44x = 11,405,281,524.75
  5. Step 5: Solve for x
    x = 11,405,281,524.75/121,651.44
  6. Step 6: Final answer
    x = 93,753.77

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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.