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Finding the Fourth Proportional to 181,806.30, 272,709.45 and 82,079.10

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Solution

The fourth proportional to 181,806.30, 272,709.45 and 82,079.10 is: 123,118.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,806.30 : 272,709.45 = 82,079.10 : x
  2. Step 2: Convert to fraction form
    181,806.30/272,709.45 = 82,079.10/x
  3. Step 3: Cross multiply
    181,806.30x = 272,709.45 × 82,079.10
  4. Step 4: Simplify right side
    181,806.30x = 22,383,746,217.50
  5. Step 5: Solve for x
    x = 22,383,746,217.50/181,806.30
  6. Step 6: Final answer
    x = 123,118.65

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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.