Home / 103,715.10-155,183.85-68,723.10

Finding the Fourth Proportional to 103,715.10, 155,183.85 and 68,723.10

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Solution

The fourth proportional to 103,715.10, 155,183.85 and 68,723.10 is: 102,827.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,715.10 : 155,183.85 = 68,723.10 : x
  2. Step 2: Convert to fraction form
    103,715.10/155,183.85 = 68,723.10/x
  3. Step 3: Cross multiply
    103,715.10x = 155,183.85 × 68,723.10
  4. Step 4: Simplify right side
    103,715.10x = 10,664,715,241.94
  5. Step 5: Solve for x
    x = 10,664,715,241.94/103,715.10
  6. Step 6: Final answer
    x = 102,827.03

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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.