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Finding the Fourth Proportional to 169,815, 254,372.40 and 99,481.08

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Solution

The fourth proportional to 169,815, 254,372.40 and 99,481.08 is: 149,016.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,815 : 254,372.40 = 99,481.08 : x
  2. Step 2: Convert to fraction form
    169,815/254,372.40 = 99,481.08/x
  3. Step 3: Cross multiply
    169,815x = 254,372.40 × 99,481.08
  4. Step 4: Simplify right side
    169,815x = 25,305,241,074.19
  5. Step 5: Solve for x
    x = 25,305,241,074.19/169,815
  6. Step 6: Final answer
    x = 149,016.52

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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.