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Finding the Fourth Proportional to 171,451.27, 257,052.30 and 71,640.03

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Solution

The fourth proportional to 171,451.27, 257,052.30 and 71,640.03 is: 107,407.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,451.27 : 257,052.30 = 71,640.03 : x
  2. Step 2: Convert to fraction form
    171,451.27/257,052.30 = 71,640.03/x
  3. Step 3: Cross multiply
    171,451.27x = 257,052.30 × 71,640.03
  4. Step 4: Simplify right side
    171,451.27x = 18,415,234,483.57
  5. Step 5: Solve for x
    x = 18,415,234,483.57/171,451.27
  6. Step 6: Final answer
    x = 107,407.98

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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.