Home / 206,571.72-309,774.18-80,145.48

Finding the Fourth Proportional to 206,571.72, 309,774.18 and 80,145.48

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Solution

The fourth proportional to 206,571.72, 309,774.18 and 80,145.48 is: 120,185.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,571.72 : 309,774.18 = 80,145.48 : x
  2. Step 2: Convert to fraction form
    206,571.72/309,774.18 = 80,145.48/x
  3. Step 3: Cross multiply
    206,571.72x = 309,774.18 × 80,145.48
  4. Step 4: Simplify right side
    206,571.72x = 24,827,000,347.71
  5. Step 5: Solve for x
    x = 24,827,000,347.71/206,571.72
  6. Step 6: Final answer
    x = 120,185.86

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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.