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Finding the Fourth Proportional to 101,887.44, 152,774.28 and 80,961.36

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Solution

The fourth proportional to 101,887.44, 152,774.28 and 80,961.36 is: 121,396.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,887.44 : 152,774.28 = 80,961.36 : x
  2. Step 2: Convert to fraction form
    101,887.44/152,774.28 = 80,961.36/x
  3. Step 3: Cross multiply
    101,887.44x = 152,774.28 × 80,961.36
  4. Step 4: Simplify right side
    101,887.44x = 12,368,813,481.82
  5. Step 5: Solve for x
    x = 12,368,813,481.82/101,887.44
  6. Step 6: Final answer
    x = 121,396.84

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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.