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Finding the Fourth Proportional to 121,625.67, 167,851.67 and 67,909.53

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Solution

The fourth proportional to 121,625.67, 167,851.67 and 67,909.53 is: 93,719.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,625.67 : 167,851.67 = 67,909.53 : x
  2. Step 2: Convert to fraction form
    121,625.67/167,851.67 = 67,909.53/x
  3. Step 3: Cross multiply
    121,625.67x = 167,851.67 × 67,909.53
  4. Step 4: Simplify right side
    121,625.67x = 11,398,728,019.42
  5. Step 5: Solve for x
    x = 11,398,728,019.42/121,625.67
  6. Step 6: Final answer
    x = 93,719.76

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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.