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Finding the Fourth Proportional to 136,758.33, 188,713.71 and 79,382.43

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Solution

The fourth proportional to 136,758.33, 188,713.71 and 79,382.43 is: 109,540.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,758.33 : 188,713.71 = 79,382.43 : x
  2. Step 2: Convert to fraction form
    136,758.33/188,713.71 = 79,382.43/x
  3. Step 3: Cross multiply
    136,758.33x = 188,713.71 × 79,382.43
  4. Step 4: Simplify right side
    136,758.33x = 14,980,552,874.12
  5. Step 5: Solve for x
    x = 14,980,552,874.12/136,758.33
  6. Step 6: Final answer
    x = 109,540.33

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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.