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Finding the Fourth Proportional to 188,105.87, 259,593.59 and 103,225.97

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Solution

The fourth proportional to 188,105.87, 259,593.59 and 103,225.97 is: 142,455.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,105.87 : 259,593.59 = 103,225.97 : x
  2. Step 2: Convert to fraction form
    188,105.87/259,593.59 = 103,225.97/x
  3. Step 3: Cross multiply
    188,105.87x = 259,593.59 × 103,225.97
  4. Step 4: Simplify right side
    188,105.87x = 26,796,800,133.53
  5. Step 5: Solve for x
    x = 26,796,800,133.53/188,105.87
  6. Step 6: Final answer
    x = 142,455.95

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1.5x scale

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.