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Finding the Fourth Proportional to 181,879.80, 272,819.70 and 82,152.60

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Solution

The fourth proportional to 181,879.80, 272,819.70 and 82,152.60 is: 123,228.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,879.80 : 272,819.70 = 82,152.60 : x
  2. Step 2: Convert to fraction form
    181,879.80/272,819.70 = 82,152.60/x
  3. Step 3: Cross multiply
    181,879.80x = 272,819.70 × 82,152.60
  4. Step 4: Simplify right side
    181,879.80x = 22,412,847,686.22
  5. Step 5: Solve for x
    x = 22,412,847,686.22/181,879.80
  6. Step 6: Final answer
    x = 123,228.90

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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.