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Finding the Fourth Proportional to 188,287.78, 259,836.83 and 103,404.84

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Solution

The fourth proportional to 188,287.78, 259,836.83 and 103,404.84 is: 142,698.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,287.78 : 259,836.83 = 103,404.84 : x
  2. Step 2: Convert to fraction form
    188,287.78/259,836.83 = 103,404.84/x
  3. Step 3: Cross multiply
    188,287.78x = 259,836.83 × 103,404.84
  4. Step 4: Simplify right side
    188,287.78x = 26,868,385,315.23
  5. Step 5: Solve for x
    x = 26,868,385,315.23/188,287.78
  6. Step 6: Final answer
    x = 142,698.51

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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.