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Finding the Fourth Proportional to 111,861.88, 154,367.40 and 60,872.88

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Solution

The fourth proportional to 111,861.88, 154,367.40 and 60,872.88 is: 84,003.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,861.88 : 154,367.40 = 60,872.88 : x
  2. Step 2: Convert to fraction form
    111,861.88/154,367.40 = 60,872.88/x
  3. Step 3: Cross multiply
    111,861.88x = 154,367.40 × 60,872.88
  4. Step 4: Simplify right side
    111,861.88x = 9,396,788,216.11
  5. Step 5: Solve for x
    x = 9,396,788,216.11/111,861.88
  6. Step 6: Final answer
    x = 84,003.49

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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.