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Finding the Fourth Proportional to 159,454.86, 220,048.83 and 91,474.80

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Solution

The fourth proportional to 159,454.86, 220,048.83 and 91,474.80 is: 126,235.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,454.86 : 220,048.83 = 91,474.80 : x
  2. Step 2: Convert to fraction form
    159,454.86/220,048.83 = 91,474.80/x
  3. Step 3: Cross multiply
    159,454.86x = 220,048.83 × 91,474.80
  4. Step 4: Simplify right side
    159,454.86x = 20,128,922,714.48
  5. Step 5: Solve for x
    x = 20,128,922,714.48/159,454.86
  6. Step 6: Final answer
    x = 126,235.87

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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.