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Finding the Fourth Proportional to 82,138.83, 123,223.45 and 25,993.07

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Solution

The fourth proportional to 82,138.83, 123,223.45 and 25,993.07 is: 38,994.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,138.83 : 123,223.45 = 25,993.07 : x
  2. Step 2: Convert to fraction form
    82,138.83/123,223.45 = 25,993.07/x
  3. Step 3: Cross multiply
    82,138.83x = 123,223.45 × 25,993.07
  4. Step 4: Simplify right side
    82,138.83x = 3,202,955,761.49
  5. Step 5: Solve for x
    x = 3,202,955,761.49/82,138.83
  6. Step 6: Final answer
    x = 38,994.42

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Double scale
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Similar ratio
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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.