Home / 206,379.15-309,568.79-136,242.06

Finding the Fourth Proportional to 206,379.15, 309,568.79 and 136,242.06

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Solution

The fourth proportional to 206,379.15, 309,568.79 and 136,242.06 is: 204,363.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,379.15 : 309,568.79 = 136,242.06 : x
  2. Step 2: Convert to fraction form
    206,379.15/309,568.79 = 136,242.06/x
  3. Step 3: Cross multiply
    206,379.15x = 309,568.79 × 136,242.06
  4. Step 4: Simplify right side
    206,379.15x = 42,176,289,661.31
  5. Step 5: Solve for x
    x = 42,176,289,661.31/206,379.15
  6. Step 6: Final answer
    x = 204,363.13

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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.