Home / 68,115.60-102,144.24-21,372.12

Finding the Fourth Proportional to 68,115.60, 102,144.24 and 21,372.12

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Solution

The fourth proportional to 68,115.60, 102,144.24 and 21,372.12 is: 32,049.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,115.60 : 102,144.24 = 21,372.12 : x
  2. Step 2: Convert to fraction form
    68,115.60/102,144.24 = 21,372.12/x
  3. Step 3: Cross multiply
    68,115.60x = 102,144.24 × 21,372.12
  4. Step 4: Simplify right side
    68,115.60x = 2,183,038,954.59
  5. Step 5: Solve for x
    x = 2,183,038,954.59/68,115.60
  6. Step 6: Final answer
    x = 32,049.03

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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.