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Finding the Fourth Proportional to 168,711.80, 252,994.80 and 84,439.40

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Solution

The fourth proportional to 168,711.80, 252,994.80 and 84,439.40 is: 126,622.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,711.80 : 252,994.80 = 84,439.40 : x
  2. Step 2: Convert to fraction form
    168,711.80/252,994.80 = 84,439.40/x
  3. Step 3: Cross multiply
    168,711.80x = 252,994.80 × 84,439.40
  4. Step 4: Simplify right side
    168,711.80x = 21,362,729,115.12
  5. Step 5: Solve for x
    x = 21,362,729,115.12/168,711.80
  6. Step 6: Final answer
    x = 126,622.61

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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.