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Finding the Fourth Proportional to 121,662, 167,846.58 and 76,321.44

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Solution

The fourth proportional to 121,662, 167,846.58 and 76,321.44 is: 105,294.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,662 : 167,846.58 = 76,321.44 : x
  2. Step 2: Convert to fraction form
    121,662/167,846.58 = 76,321.44/x
  3. Step 3: Cross multiply
    121,662x = 167,846.58 × 76,321.44
  4. Step 4: Simplify right side
    121,662x = 12,810,292,684.68
  5. Step 5: Solve for x
    x = 12,810,292,684.68/121,662
  6. Step 6: Final answer
    x = 105,294.12

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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.