Home / 206,431.13-309,725.57-80,160.03

Finding the Fourth Proportional to 206,431.13, 309,725.57 and 80,160.03

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Solution

The fourth proportional to 206,431.13, 309,725.57 and 80,160.03 is: 120,270.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,431.13 : 309,725.57 = 80,160.03 : x
  2. Step 2: Convert to fraction form
    206,431.13/309,725.57 = 80,160.03/x
  3. Step 3: Cross multiply
    206,431.13x = 309,725.57 × 80,160.03
  4. Step 4: Simplify right side
    206,431.13x = 24,827,611,183.37
  5. Step 5: Solve for x
    x = 24,827,611,183.37/206,431.13
  6. Step 6: Final answer
    x = 120,270.67

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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.