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Finding the Fourth Proportional to 111,937.80, 167,760.90 and 45,323.40

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Solution

The fourth proportional to 111,937.80, 167,760.90 and 45,323.40 is: 67,926.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,937.80 : 167,760.90 = 45,323.40 : x
  2. Step 2: Convert to fraction form
    111,937.80/167,760.90 = 45,323.40/x
  3. Step 3: Cross multiply
    111,937.80x = 167,760.90 × 45,323.40
  4. Step 4: Simplify right side
    111,937.80x = 7,603,494,375.06
  5. Step 5: Solve for x
    x = 7,603,494,375.06/111,937.80
  6. Step 6: Final answer
    x = 67,926.07

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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.