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Finding the Fourth Proportional to 121,239.40, 167,315.54 and 67,524.41

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Solution

The fourth proportional to 121,239.40, 167,315.54 and 67,524.41 is: 93,186.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,239.40 : 167,315.54 = 67,524.41 : x
  2. Step 2: Convert to fraction form
    121,239.40/167,315.54 = 67,524.41/x
  3. Step 3: Cross multiply
    121,239.40x = 167,315.54 × 67,524.41
  4. Step 4: Simplify right side
    121,239.40x = 11,297,883,122.33
  5. Step 5: Solve for x
    x = 11,297,883,122.33/121,239.40
  6. Step 6: Final answer
    x = 93,186.56

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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.