Home / 82,516.10-123,774.15-20,186.60

Finding the Fourth Proportional to 82,516.10, 123,774.15 and 20,186.60

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Solution

The fourth proportional to 82,516.10, 123,774.15 and 20,186.60 is: 30,279.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,516.10 : 123,774.15 = 20,186.60 : x
  2. Step 2: Convert to fraction form
    82,516.10/123,774.15 = 20,186.60/x
  3. Step 3: Cross multiply
    82,516.10x = 123,774.15 × 20,186.60
  4. Step 4: Simplify right side
    82,516.10x = 2,498,579,256.39
  5. Step 5: Solve for x
    x = 2,498,579,256.39/82,516.10
  6. Step 6: Final answer
    x = 30,279.90

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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.