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Finding the Fourth Proportional to 171,654, 257,481.36 and 73,158

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Solution

The fourth proportional to 171,654, 257,481.36 and 73,158 is: 109,737.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,654 : 257,481.36 = 73,158 : x
  2. Step 2: Convert to fraction form
    171,654/257,481.36 = 73,158/x
  3. Step 3: Cross multiply
    171,654x = 257,481.36 × 73,158
  4. Step 4: Simplify right side
    171,654x = 18,836,821,334.88
  5. Step 5: Solve for x
    x = 18,836,821,334.88/171,654
  6. Step 6: Final answer
    x = 109,737.15

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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.