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Finding the Fourth Proportional to 120,606.84, 180,910.25 and 82,618.65

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Solution

The fourth proportional to 120,606.84, 180,910.25 and 82,618.65 is: 123,927.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,606.84 : 180,910.25 = 82,618.65 : x
  2. Step 2: Convert to fraction form
    120,606.84/180,910.25 = 82,618.65/x
  3. Step 3: Cross multiply
    120,606.84x = 180,910.25 × 82,618.65
  4. Step 4: Simplify right side
    120,606.84x = 14,946,560,626.16
  5. Step 5: Solve for x
    x = 14,946,560,626.16/120,606.84
  6. Step 6: Final answer
    x = 123,927.97

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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.