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Finding the Fourth Proportional to 121,236.40, 167,311.40 and 67,521.41

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Solution

The fourth proportional to 121,236.40, 167,311.40 and 67,521.41 is: 93,182.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,236.40 : 167,311.40 = 67,521.41 : x
  2. Step 2: Convert to fraction form
    121,236.40/167,311.40 = 67,521.41/x
  3. Step 3: Cross multiply
    121,236.40x = 167,311.40 × 67,521.41
  4. Step 4: Simplify right side
    121,236.40x = 11,297,101,299.47
  5. Step 5: Solve for x
    x = 11,297,101,299.47/121,236.40
  6. Step 6: Final answer
    x = 93,182.43

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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.