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Finding the Fourth Proportional to 136,376.69, 188,216.99 and 82,654.86

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Solution

The fourth proportional to 136,376.69, 188,216.99 and 82,654.86 is: 114,074.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,376.69 : 188,216.99 = 82,654.86 : x
  2. Step 2: Convert to fraction form
    136,376.69/188,216.99 = 82,654.86/x
  3. Step 3: Cross multiply
    136,376.69x = 188,216.99 × 82,654.86
  4. Step 4: Simplify right side
    136,376.69x = 15,557,048,204.95
  5. Step 5: Solve for x
    x = 15,557,048,204.95/136,376.69
  6. Step 6: Final answer
    x = 114,074.10

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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.