Home / 206,734.86-309,905.42-66,395.07

Finding the Fourth Proportional to 206,734.86, 309,905.42 and 66,395.07

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Solution

The fourth proportional to 206,734.86, 309,905.42 and 66,395.07 is: 99,529.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,734.86 : 309,905.42 = 66,395.07 : x
  2. Step 2: Convert to fraction form
    206,734.86/309,905.42 = 66,395.07/x
  3. Step 3: Cross multiply
    206,734.86x = 309,905.42 × 66,395.07
  4. Step 4: Simplify right side
    206,734.86x = 20,576,191,722.30
  5. Step 5: Solve for x
    x = 20,576,191,722.30/206,734.86
  6. Step 6: Final answer
    x = 99,529.38

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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.