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Finding the Fourth Proportional to 111,740.87, 167,610.87 and 45,180.20

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Solution

The fourth proportional to 111,740.87, 167,610.87 and 45,180.20 is: 67,770.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,740.87 : 167,610.87 = 45,180.20 : x
  2. Step 2: Convert to fraction form
    111,740.87/167,610.87 = 45,180.20/x
  3. Step 3: Cross multiply
    111,740.87x = 167,610.87 × 45,180.20
  4. Step 4: Simplify right side
    111,740.87x = 7,572,691,790.72
  5. Step 5: Solve for x
    x = 7,572,691,790.72/111,740.87
  6. Step 6: Final answer
    x = 67,770.12

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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.