Home / 206,629.30-309,615.90-136,426.60

Finding the Fourth Proportional to 206,629.30, 309,615.90 and 136,426.60

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Solution

The fourth proportional to 206,629.30, 309,615.90 and 136,426.60 is: 204,423.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,629.30 : 309,615.90 = 136,426.60 : x
  2. Step 2: Convert to fraction form
    206,629.30/309,615.90 = 136,426.60/x
  3. Step 3: Cross multiply
    206,629.30x = 309,615.90 × 136,426.60
  4. Step 4: Simplify right side
    206,629.30x = 42,239,844,542.94
  5. Step 5: Solve for x
    x = 42,239,844,542.94/206,629.30
  6. Step 6: Final answer
    x = 204,423.31

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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.