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Finding the Fourth Proportional to 141,468, 195,236.40 and 81,057.44

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Solution

The fourth proportional to 141,468, 195,236.40 and 81,057.44 is: 111,865.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,468 : 195,236.40 = 81,057.44 : x
  2. Step 2: Convert to fraction form
    141,468/195,236.40 = 81,057.44/x
  3. Step 3: Cross multiply
    141,468x = 195,236.40 × 81,057.44
  4. Step 4: Simplify right side
    141,468x = 15,825,362,778.82
  5. Step 5: Solve for x
    x = 15,825,362,778.82/141,468
  6. Step 6: Final answer
    x = 111,865.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.