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Finding the Fourth Proportional to 136,523.66, 188,379.80 and 76,081.04

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Solution

The fourth proportional to 136,523.66, 188,379.80 and 76,081.04 is: 104,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,523.66 : 188,379.80 = 76,081.04 : x
  2. Step 2: Convert to fraction form
    136,523.66/188,379.80 = 76,081.04/x
  3. Step 3: Cross multiply
    136,523.66x = 188,379.80 × 76,081.04
  4. Step 4: Simplify right side
    136,523.66x = 14,332,131,098.99
  5. Step 5: Solve for x
    x = 14,332,131,098.99/136,523.66
  6. Step 6: Final answer
    x = 104,979.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.