Home / 206,021.81-284,286.11-119,999.68

Finding the Fourth Proportional to 206,021.81, 284,286.11 and 119,999.68

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Solution

The fourth proportional to 206,021.81, 284,286.11 and 119,999.68 is: 165,585.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,021.81 : 284,286.11 = 119,999.68 : x
  2. Step 2: Convert to fraction form
    206,021.81/284,286.11 = 119,999.68/x
  3. Step 3: Cross multiply
    206,021.81x = 284,286.11 × 119,999.68
  4. Step 4: Simplify right side
    206,021.81x = 34,114,240,917.73
  5. Step 5: Solve for x
    x = 34,114,240,917.73/206,021.81
  6. Step 6: Final answer
    x = 165,585.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.