Home / 82,127.16-123,190.65-19,797.66

Finding the Fourth Proportional to 82,127.16, 123,190.65 and 19,797.66

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Solution

The fourth proportional to 82,127.16, 123,190.65 and 19,797.66 is: 29,696.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,127.16 : 123,190.65 = 19,797.66 : x
  2. Step 2: Convert to fraction form
    82,127.16/123,190.65 = 19,797.66/x
  3. Step 3: Cross multiply
    82,127.16x = 123,190.65 × 19,797.66
  4. Step 4: Simplify right side
    82,127.16x = 2,438,886,603.88
  5. Step 5: Solve for x
    x = 2,438,886,603.88/82,127.16
  6. Step 6: Final answer
    x = 29,696.47

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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.