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Finding the Fourth Proportional to 171,052.45, 256,620.40 and 120,549.91

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Solution

The fourth proportional to 171,052.45, 256,620.40 and 120,549.91 is: 180,854.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,052.45 : 256,620.40 = 120,549.91 : x
  2. Step 2: Convert to fraction form
    171,052.45/256,620.40 = 120,549.91/x
  3. Step 3: Cross multiply
    171,052.45x = 256,620.40 × 120,549.91
  4. Step 4: Simplify right side
    171,052.45x = 30,935,566,124.16
  5. Step 5: Solve for x
    x = 30,935,566,124.16/171,052.45
  6. Step 6: Final answer
    x = 180,854.27

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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.