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Finding the Fourth Proportional to 136,464, 188,321.54 and 79,876.59

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Solution

The fourth proportional to 136,464, 188,321.54 and 79,876.59 is: 110,230.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,464 : 188,321.54 = 79,876.59 : x
  2. Step 2: Convert to fraction form
    136,464/188,321.54 = 79,876.59/x
  3. Step 3: Cross multiply
    136,464x = 188,321.54 × 79,876.59
  4. Step 4: Simplify right side
    136,464x = 15,042,482,039.37
  5. Step 5: Solve for x
    x = 15,042,482,039.37/136,464
  6. Step 6: Final answer
    x = 110,230.41

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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.