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Finding the Fourth Proportional to 100,736.37, 151,104.57 and 40,781.61

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Solution

The fourth proportional to 100,736.37, 151,104.57 and 40,781.61 is: 61,172.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,736.37 : 151,104.57 = 40,781.61 : x
  2. Step 2: Convert to fraction form
    100,736.37/151,104.57 = 40,781.61/x
  3. Step 3: Cross multiply
    100,736.37x = 151,104.57 × 40,781.61
  4. Step 4: Simplify right side
    100,736.37x = 6,162,287,642.96
  5. Step 5: Solve for x
    x = 6,162,287,642.96/100,736.37
  6. Step 6: Final answer
    x = 61,172.42

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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.