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Finding the Fourth Proportional to 171,405.90, 257,108.85 and 167,906.70

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Solution

The fourth proportional to 171,405.90, 257,108.85 and 167,906.70 is: 251,860.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,405.90 : 257,108.85 = 167,906.70 : x
  2. Step 2: Convert to fraction form
    171,405.90/257,108.85 = 167,906.70/x
  3. Step 3: Cross multiply
    171,405.90x = 257,108.85 × 167,906.70
  4. Step 4: Simplify right side
    171,405.90x = 43,170,298,544.30
  5. Step 5: Solve for x
    x = 43,170,298,544.30/171,405.90
  6. Step 6: Final answer
    x = 251,860.05

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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.