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Finding the Fourth Proportional to 121,648.29, 167,857.99 and 67,926.43

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Solution

The fourth proportional to 121,648.29, 167,857.99 and 67,926.43 is: 93,729.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,648.29 : 167,857.99 = 67,926.43 : x
  2. Step 2: Convert to fraction form
    121,648.29/167,857.99 = 67,926.43/x
  3. Step 3: Cross multiply
    121,648.29x = 167,857.99 × 67,926.43
  4. Step 4: Simplify right side
    121,648.29x = 11,401,994,007.68
  5. Step 5: Solve for x
    x = 11,401,994,007.68/121,648.29
  6. Step 6: Final answer
    x = 93,729.18

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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.