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Finding the Fourth Proportional to 74,142, 111,255.57 and 73,540.17

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Solution

The fourth proportional to 74,142, 111,255.57 and 73,540.17 is: 110,352.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,142 : 111,255.57 = 73,540.17 : x
  2. Step 2: Convert to fraction form
    74,142/111,255.57 = 73,540.17/x
  3. Step 3: Cross multiply
    74,142x = 111,255.57 × 73,540.17
  4. Step 4: Simplify right side
    74,142x = 8,181,753,531.25
  5. Step 5: Solve for x
    x = 8,181,753,531.25/74,142
  6. Step 6: Final answer
    x = 110,352.48

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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.