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Finding the Fourth Proportional to 168,994.20, 253,491.30 and 106,939.80

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Solution

The fourth proportional to 168,994.20, 253,491.30 and 106,939.80 is: 160,409.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,994.20 : 253,491.30 = 106,939.80 : x
  2. Step 2: Convert to fraction form
    168,994.20/253,491.30 = 106,939.80/x
  3. Step 3: Cross multiply
    168,994.20x = 253,491.30 × 106,939.80
  4. Step 4: Simplify right side
    168,994.20x = 27,108,308,923.74
  5. Step 5: Solve for x
    x = 27,108,308,923.74/168,994.20
  6. Step 6: Final answer
    x = 160,409.70

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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.