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Finding the Fourth Proportional to 121,506.82, 167,679.18 and 67,788.64

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Solution

The fourth proportional to 121,506.82, 167,679.18 and 67,788.64 is: 93,548.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,506.82 : 167,679.18 = 67,788.64 : x
  2. Step 2: Convert to fraction form
    121,506.82/167,679.18 = 67,788.64/x
  3. Step 3: Cross multiply
    121,506.82x = 167,679.18 × 67,788.64
  4. Step 4: Simplify right side
    121,506.82x = 11,366,743,568.52
  5. Step 5: Solve for x
    x = 11,366,743,568.52/121,506.82
  6. Step 6: Final answer
    x = 93,548.19

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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.