Home / 206,025.12-309,041.78-135,398.01

Finding the Fourth Proportional to 206,025.12, 309,041.78 and 135,398.01

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Solution

The fourth proportional to 206,025.12, 309,041.78 and 135,398.01 is: 203,099.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,025.12 : 309,041.78 = 135,398.01 : x
  2. Step 2: Convert to fraction form
    206,025.12/309,041.78 = 135,398.01/x
  3. Step 3: Cross multiply
    206,025.12x = 309,041.78 × 135,398.01
  4. Step 4: Simplify right side
    206,025.12x = 41,843,640,654.85
  5. Step 5: Solve for x
    x = 41,843,640,654.85/206,025.12
  6. Step 6: Final answer
    x = 203,099.70

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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.