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Finding the Fourth Proportional to 109,504.64, 151,181.52 and 71,844.64

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Solution

The fourth proportional to 109,504.64, 151,181.52 and 71,844.64 is: 99,188.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,504.64 : 151,181.52 = 71,844.64 : x
  2. Step 2: Convert to fraction form
    109,504.64/151,181.52 = 71,844.64/x
  3. Step 3: Cross multiply
    109,504.64x = 151,181.52 × 71,844.64
  4. Step 4: Simplify right side
    109,504.64x = 10,861,581,879.05
  5. Step 5: Solve for x
    x = 10,861,581,879.05/109,504.64
  6. Step 6: Final answer
    x = 99,188.33

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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.