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Finding the Fourth Proportional to 171,432.94, 257,190.46 and 71,537.56

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Solution

The fourth proportional to 171,432.94, 257,190.46 and 71,537.56 is: 107,323.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,432.94 : 257,190.46 = 71,537.56 : x
  2. Step 2: Convert to fraction form
    171,432.94/257,190.46 = 71,537.56/x
  3. Step 3: Cross multiply
    171,432.94x = 257,190.46 × 71,537.56
  4. Step 4: Simplify right side
    171,432.94x = 18,398,777,963.68
  5. Step 5: Solve for x
    x = 18,398,777,963.68/171,432.94
  6. Step 6: Final answer
    x = 107,323.47

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1.5x scale

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.