Home / 206,192.72-309,408.12-111,423.20

Finding the Fourth Proportional to 206,192.72, 309,408.12 and 111,423.20

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Solution

The fourth proportional to 206,192.72, 309,408.12 and 111,423.20 is: 167,199.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,192.72 : 309,408.12 = 111,423.20 : x
  2. Step 2: Convert to fraction form
    206,192.72/309,408.12 = 111,423.20/x
  3. Step 3: Cross multiply
    206,192.72x = 309,408.12 × 111,423.20
  4. Step 4: Simplify right side
    206,192.72x = 34,475,242,836.38
  5. Step 5: Solve for x
    x = 34,475,242,836.38/206,192.72
  6. Step 6: Final answer
    x = 167,199.13

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1.5x scale

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.