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Finding the Fourth Proportional to 171,487.83, 257,138.97 and 136,176.32

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Solution

The fourth proportional to 171,487.83, 257,138.97 and 136,176.32 is: 204,190.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,487.83 : 257,138.97 = 136,176.32 : x
  2. Step 2: Convert to fraction form
    171,487.83/257,138.97 = 136,176.32/x
  3. Step 3: Cross multiply
    171,487.83x = 257,138.97 × 136,176.32
  4. Step 4: Simplify right side
    171,487.83x = 35,016,238,795.38
  5. Step 5: Solve for x
    x = 35,016,238,795.38/171,487.83
  6. Step 6: Final answer
    x = 204,190.81

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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.