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Finding the Fourth Proportional to 120,714.80, 181,039.80 and 50,579.60

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Solution

The fourth proportional to 120,714.80, 181,039.80 and 50,579.60 is: 75,855.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,714.80 : 181,039.80 = 50,579.60 : x
  2. Step 2: Convert to fraction form
    120,714.80/181,039.80 = 50,579.60/x
  3. Step 3: Cross multiply
    120,714.80x = 181,039.80 × 50,579.60
  4. Step 4: Simplify right side
    120,714.80x = 9,156,920,668.08
  5. Step 5: Solve for x
    x = 9,156,920,668.08/120,714.80
  6. Step 6: Final answer
    x = 75,855.82

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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.