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Finding the Fourth Proportional to 111,266.40, 166,899.60 and 73,876.80

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Solution

The fourth proportional to 111,266.40, 166,899.60 and 73,876.80 is: 110,815.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,266.40 : 166,899.60 = 73,876.80 : x
  2. Step 2: Convert to fraction form
    111,266.40/166,899.60 = 73,876.80/x
  3. Step 3: Cross multiply
    111,266.40x = 166,899.60 × 73,876.80
  4. Step 4: Simplify right side
    111,266.40x = 12,330,008,369.28
  5. Step 5: Solve for x
    x = 12,330,008,369.28/111,266.40
  6. Step 6: Final answer
    x = 110,815.20

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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.