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Finding the Fourth Proportional to 84,725.70, 127,234.35 and 82,101.30

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Solution

The fourth proportional to 84,725.70, 127,234.35 and 82,101.30 is: 123,293.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,725.70 : 127,234.35 = 82,101.30 : x
  2. Step 2: Convert to fraction form
    84,725.70/127,234.35 = 82,101.30/x
  3. Step 3: Cross multiply
    84,725.70x = 127,234.35 × 82,101.30
  4. Step 4: Simplify right side
    84,725.70x = 10,446,105,539.66
  5. Step 5: Solve for x
    x = 10,446,105,539.66/84,725.70
  6. Step 6: Final answer
    x = 123,293.23

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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.