Home / 206,186.72-309,329.28-73,078.61

Finding the Fourth Proportional to 206,186.72, 309,329.28 and 73,078.61

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Solution

The fourth proportional to 206,186.72, 309,329.28 and 73,078.61 is: 109,635.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,186.72 : 309,329.28 = 73,078.61 : x
  2. Step 2: Convert to fraction form
    206,186.72/309,329.28 = 73,078.61/x
  3. Step 3: Cross multiply
    206,186.72x = 309,329.28 × 73,078.61
  4. Step 4: Simplify right side
    206,186.72x = 22,605,352,268.05
  5. Step 5: Solve for x
    x = 22,605,352,268.05/206,186.72
  6. Step 6: Final answer
    x = 109,635.35

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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.