Home / 206,475.14-309,683.55-66,215.54

Finding the Fourth Proportional to 206,475.14, 309,683.55 and 66,215.54

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Solution

The fourth proportional to 206,475.14, 309,683.55 and 66,215.54 is: 99,313.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,475.14 : 309,683.55 = 66,215.54 : x
  2. Step 2: Convert to fraction form
    206,475.14/309,683.55 = 66,215.54/x
  3. Step 3: Cross multiply
    206,475.14x = 309,683.55 × 66,215.54
  4. Step 4: Simplify right side
    206,475.14x = 20,505,863,492.37
  5. Step 5: Solve for x
    x = 20,505,863,492.37/206,475.14
  6. Step 6: Final answer
    x = 99,313.96

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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.