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Finding the Fourth Proportional to 133,186.80, 199,610.10 and 54,211.80

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Solution

The fourth proportional to 133,186.80, 199,610.10 and 54,211.80 is: 81,248.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,186.80 : 199,610.10 = 54,211.80 : x
  2. Step 2: Convert to fraction form
    133,186.80/199,610.10 = 54,211.80/x
  3. Step 3: Cross multiply
    133,186.80x = 199,610.10 × 54,211.80
  4. Step 4: Simplify right side
    133,186.80x = 10,821,222,819.18
  5. Step 5: Solve for x
    x = 10,821,222,819.18/133,186.80
  6. Step 6: Final answer
    x = 81,248.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.