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Finding the Fourth Proportional to 131,912.33, 197,736.03 and 65,400.80

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Solution

The fourth proportional to 131,912.33, 197,736.03 and 65,400.80 is: 98,035.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,912.33 : 197,736.03 = 65,400.80 : x
  2. Step 2: Convert to fraction form
    131,912.33/197,736.03 = 65,400.80/x
  3. Step 3: Cross multiply
    131,912.33x = 197,736.03 × 65,400.80
  4. Step 4: Simplify right side
    131,912.33x = 12,932,093,562.14
  5. Step 5: Solve for x
    x = 12,932,093,562.14/131,912.33
  6. Step 6: Final answer
    x = 98,035.52

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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.