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Finding the Fourth Proportional to 149,084.64, 205,735.44 and 81,101.52

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Solution

The fourth proportional to 149,084.64, 205,735.44 and 81,101.52 is: 111,919.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,084.64 : 205,735.44 = 81,101.52 : x
  2. Step 2: Convert to fraction form
    149,084.64/205,735.44 = 81,101.52/x
  3. Step 3: Cross multiply
    149,084.64x = 205,735.44 × 81,101.52
  4. Step 4: Simplify right side
    149,084.64x = 16,685,456,901.87
  5. Step 5: Solve for x
    x = 16,685,456,901.87/149,084.64
  6. Step 6: Final answer
    x = 111,919.36

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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.