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Finding the Fourth Proportional to 119,991.86, 179,990.76 and 31,249.34

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Solution

The fourth proportional to 119,991.86, 179,990.76 and 31,249.34 is: 46,874.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,991.86 : 179,990.76 = 31,249.34 : x
  2. Step 2: Convert to fraction form
    119,991.86/179,990.76 = 31,249.34/x
  3. Step 3: Cross multiply
    119,991.86x = 179,990.76 × 31,249.34
  4. Step 4: Simplify right side
    119,991.86x = 5,624,592,456.10
  5. Step 5: Solve for x
    x = 5,624,592,456.10/119,991.86
  6. Step 6: Final answer
    x = 46,874.78

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1.5x scale

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.