Home / 82,114.14-123,171.21-19,784.64

Finding the Fourth Proportional to 82,114.14, 123,171.21 and 19,784.64

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Solution

The fourth proportional to 82,114.14, 123,171.21 and 19,784.64 is: 29,676.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,114.14 : 123,171.21 = 19,784.64 : x
  2. Step 2: Convert to fraction form
    82,114.14/123,171.21 = 19,784.64/x
  3. Step 3: Cross multiply
    82,114.14x = 123,171.21 × 19,784.64
  4. Step 4: Simplify right side
    82,114.14x = 2,436,898,048.21
  5. Step 5: Solve for x
    x = 2,436,898,048.21/82,114.14
  6. Step 6: Final answer
    x = 29,676.96

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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.