Home / 206,395.16-309,490.14-66,135.56

Finding the Fourth Proportional to 206,395.16, 309,490.14 and 66,135.56

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Solution

The fourth proportional to 206,395.16, 309,490.14 and 66,135.56 is: 99,170.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,395.16 : 309,490.14 = 66,135.56 : x
  2. Step 2: Convert to fraction form
    206,395.16/309,490.14 = 66,135.56/x
  3. Step 3: Cross multiply
    206,395.16x = 309,490.14 × 66,135.56
  4. Step 4: Simplify right side
    206,395.16x = 20,468,303,723.38
  5. Step 5: Solve for x
    x = 20,468,303,723.38/206,395.16
  6. Step 6: Final answer
    x = 99,170.46

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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.