Home / 82,126.16-123,189.15-19,796.66

Finding the Fourth Proportional to 82,126.16, 123,189.15 and 19,796.66

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Solution

The fourth proportional to 82,126.16, 123,189.15 and 19,796.66 is: 29,694.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,126.16 : 123,189.15 = 19,796.66 : x
  2. Step 2: Convert to fraction form
    82,126.16/123,189.15 = 19,796.66/x
  3. Step 3: Cross multiply
    82,126.16x = 123,189.15 × 19,796.66
  4. Step 4: Simplify right side
    82,126.16x = 2,438,733,718.24
  5. Step 5: Solve for x
    x = 2,438,733,718.24/82,126.16
  6. Step 6: Final answer
    x = 29,694.97

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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.