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Finding the Fourth Proportional to 159,879.83, 220,649.23 and 91,936.59

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Solution

The fourth proportional to 159,879.83, 220,649.23 and 91,936.59 is: 126,881.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,879.83 : 220,649.23 = 91,936.59 : x
  2. Step 2: Convert to fraction form
    159,879.83/220,649.23 = 91,936.59/x
  3. Step 3: Cross multiply
    159,879.83x = 220,649.23 × 91,936.59
  4. Step 4: Simplify right side
    159,879.83x = 20,285,737,079.81
  5. Step 5: Solve for x
    x = 20,285,737,079.81/159,879.83
  6. Step 6: Final answer
    x = 126,881.16

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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.