Home / 205,096.20-307,644.30-120,769.80

Finding the Fourth Proportional to 205,096.20, 307,644.30 and 120,769.80

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Solution

The fourth proportional to 205,096.20, 307,644.30 and 120,769.80 is: 181,154.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,096.20 : 307,644.30 = 120,769.80 : x
  2. Step 2: Convert to fraction form
    205,096.20/307,644.30 = 120,769.80/x
  3. Step 3: Cross multiply
    205,096.20x = 307,644.30 × 120,769.80
  4. Step 4: Simplify right side
    205,096.20x = 37,154,140,582.14
  5. Step 5: Solve for x
    x = 37,154,140,582.14/205,096.20
  6. Step 6: Final answer
    x = 181,154.70

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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.