Home / 159,905.12-220,641.44-91,906.16

Finding the Fourth Proportional to 159,905.12, 220,641.44 and 91,906.16

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Solution

The fourth proportional to 159,905.12, 220,641.44 and 91,906.16 is: 126,814.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,905.12 : 220,641.44 = 91,906.16 : x
  2. Step 2: Convert to fraction form
    159,905.12/220,641.44 = 91,906.16/x
  3. Step 3: Cross multiply
    159,905.12x = 220,641.44 × 91,906.16
  4. Step 4: Simplify right side
    159,905.12x = 20,278,307,487.27
  5. Step 5: Solve for x
    x = 20,278,307,487.27/159,905.12
  6. Step 6: Final answer
    x = 126,814.62

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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.