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Finding the Fourth Proportional to 121,352.22, 167,466.90 and 67,640.70

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Solution

The fourth proportional to 121,352.22, 167,466.90 and 67,640.70 is: 93,344.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,352.22 : 167,466.90 = 67,640.70 : x
  2. Step 2: Convert to fraction form
    121,352.22/167,466.90 = 67,640.70/x
  3. Step 3: Cross multiply
    121,352.22x = 167,466.90 × 67,640.70
  4. Step 4: Simplify right side
    121,352.22x = 11,327,578,342.83
  5. Step 5: Solve for x
    x = 11,327,578,342.83/121,352.22
  6. Step 6: Final answer
    x = 93,344.63

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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.