Home / 188,027.68-259,476.64-103,143.20

Finding the Fourth Proportional to 188,027.68, 259,476.64 and 103,143.20

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Solution

The fourth proportional to 188,027.68, 259,476.64 and 103,143.20 is: 142,336.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,027.68 : 259,476.64 = 103,143.20 : x
  2. Step 2: Convert to fraction form
    188,027.68/259,476.64 = 103,143.20/x
  3. Step 3: Cross multiply
    188,027.68x = 259,476.64 × 103,143.20
  4. Step 4: Simplify right side
    188,027.68x = 26,763,250,974.85
  5. Step 5: Solve for x
    x = 26,763,250,974.85/188,027.68
  6. Step 6: Final answer
    x = 142,336.76

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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.