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Finding the Fourth Proportional to 111,110.78, 166,631.60 and 37,221.50

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Solution

The fourth proportional to 111,110.78, 166,631.60 and 37,221.50 is: 55,820.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,110.78 : 166,631.60 = 37,221.50 : x
  2. Step 2: Convert to fraction form
    111,110.78/166,631.60 = 37,221.50/x
  3. Step 3: Cross multiply
    111,110.78x = 166,631.60 × 37,221.50
  4. Step 4: Simplify right side
    111,110.78x = 6,202,278,099.40
  5. Step 5: Solve for x
    x = 6,202,278,099.40/111,110.78
  6. Step 6: Final answer
    x = 55,820.67

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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.