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Finding the Fourth Proportional to 111,940.78, 167,911.20 and 37,040.80

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Solution

The fourth proportional to 111,940.78, 167,911.20 and 37,040.80 is: 55,561.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,940.78 : 167,911.20 = 37,040.80 : x
  2. Step 2: Convert to fraction form
    111,940.78/167,911.20 = 37,040.80/x
  3. Step 3: Cross multiply
    111,940.78x = 167,911.20 × 37,040.80
  4. Step 4: Simplify right side
    111,940.78x = 6,219,565,176.96
  5. Step 5: Solve for x
    x = 6,219,565,176.96/111,940.78
  6. Step 6: Final answer
    x = 55,561.21

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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.