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Finding the Fourth Proportional to 159,906.44, 220,663 and 91,875.25

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Solution

The fourth proportional to 159,906.44, 220,663 and 91,875.25 is: 126,783.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,906.44 : 220,663 = 91,875.25 : x
  2. Step 2: Convert to fraction form
    159,906.44/220,663 = 91,875.25/x
  3. Step 3: Cross multiply
    159,906.44x = 220,663 × 91,875.25
  4. Step 4: Simplify right side
    159,906.44x = 20,273,468,290.75
  5. Step 5: Solve for x
    x = 20,273,468,290.75/159,906.44
  6. Step 6: Final answer
    x = 126,783.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.