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Finding the Fourth Proportional to 171,039.70, 256,601.31 and 120,537.24

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Solution

The fourth proportional to 171,039.70, 256,601.31 and 120,537.24 is: 180,835.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,039.70 : 256,601.31 = 120,537.24 : x
  2. Step 2: Convert to fraction form
    171,039.70/256,601.31 = 120,537.24/x
  3. Step 3: Cross multiply
    171,039.70x = 256,601.31 × 120,537.24
  4. Step 4: Simplify right side
    171,039.70x = 30,930,013,687.78
  5. Step 5: Solve for x
    x = 30,930,013,687.78/171,039.70
  6. Step 6: Final answer
    x = 180,835.29

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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.