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Finding the Fourth Proportional to 158,912.60, 238,563.30 and 87,891.80

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Solution

The fourth proportional to 158,912.60, 238,563.30 and 87,891.80 is: 131,945.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,912.60 : 238,563.30 = 87,891.80 : x
  2. Step 2: Convert to fraction form
    158,912.60/238,563.30 = 87,891.80/x
  3. Step 3: Cross multiply
    158,912.60x = 238,563.30 × 87,891.80
  4. Step 4: Simplify right side
    158,912.60x = 20,967,757,850.94
  5. Step 5: Solve for x
    x = 20,967,757,850.94/158,912.60
  6. Step 6: Final answer
    x = 131,945.22

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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.