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Finding the Fourth Proportional to 100,980, 151,512.96 and 41,858.64

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Solution

The fourth proportional to 100,980, 151,512.96 and 41,858.64 is: 62,805.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,980 : 151,512.96 = 41,858.64 : x
  2. Step 2: Convert to fraction form
    100,980/151,512.96 = 41,858.64/x
  3. Step 3: Cross multiply
    100,980x = 151,512.96 × 41,858.64
  4. Step 4: Simplify right side
    100,980x = 6,342,126,447.97
  5. Step 5: Solve for x
    x = 6,342,126,447.97/100,980
  6. Step 6: Final answer
    x = 62,805.77

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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.