Home / 68,183.10-102,280.56-20,808.85

Finding the Fourth Proportional to 68,183.10, 102,280.56 and 20,808.85

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Solution

The fourth proportional to 68,183.10, 102,280.56 and 20,808.85 is: 31,215.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,183.10 : 102,280.56 = 20,808.85 : x
  2. Step 2: Convert to fraction form
    68,183.10/102,280.56 = 20,808.85/x
  3. Step 3: Cross multiply
    68,183.10x = 102,280.56 × 20,808.85
  4. Step 4: Simplify right side
    68,183.10x = 2,128,340,689.00
  5. Step 5: Solve for x
    x = 2,128,340,689.00/68,183.10
  6. Step 6: Final answer
    x = 31,215.08

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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.