Home / 211,939.80-317,908.88-54,168.00

Finding the Fourth Proportional to 211,939.80, 317,908.88 and 54,168.00

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Solution

The fourth proportional to 211,939.80, 317,908.88 and 54,168.00 is: 81,251.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,939.80 : 317,908.88 = 54,168.00 : x
  2. Step 2: Convert to fraction form
    211,939.80/317,908.88 = 54,168.00/x
  3. Step 3: Cross multiply
    211,939.80x = 317,908.88 × 54,168.00
  4. Step 4: Simplify right side
    211,939.80x = 17,220,486,622.30
  5. Step 5: Solve for x
    x = 17,220,486,622.30/211,939.80
  6. Step 6: Final answer
    x = 81,251.78

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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.