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Finding the Fourth Proportional to 179,915.80, 269,906.10 and 74,745.40

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Solution

The fourth proportional to 179,915.80, 269,906.10 and 74,745.40 is: 112,131.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,915.80 : 269,906.10 = 74,745.40 : x
  2. Step 2: Convert to fraction form
    179,915.80/269,906.10 = 74,745.40/x
  3. Step 3: Cross multiply
    179,915.80x = 269,906.10 × 74,745.40
  4. Step 4: Simplify right side
    179,915.80x = 20,174,239,406.94
  5. Step 5: Solve for x
    x = 20,174,239,406.94/179,915.80
  6. Step 6: Final answer
    x = 112,131.56

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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.