Home / 206,844.60-309,975.30-127,723.80

Finding the Fourth Proportional to 206,844.60, 309,975.30 and 127,723.80

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Solution

The fourth proportional to 206,844.60, 309,975.30 and 127,723.80 is: 191,405.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,844.60 : 309,975.30 = 127,723.80 : x
  2. Step 2: Convert to fraction form
    206,844.60/309,975.30 = 127,723.80/x
  3. Step 3: Cross multiply
    206,844.60x = 309,975.30 × 127,723.80
  4. Step 4: Simplify right side
    206,844.60x = 39,591,223,222.14
  5. Step 5: Solve for x
    x = 39,591,223,222.14/206,844.60
  6. Step 6: Final answer
    x = 191,405.64

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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.