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Finding the Fourth Proportional to 188,163.91, 259,881.82 and 123,920.28

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Solution

The fourth proportional to 188,163.91, 259,881.82 and 123,920.28 is: 171,151.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,163.91 : 259,881.82 = 123,920.28 : x
  2. Step 2: Convert to fraction form
    188,163.91/259,881.82 = 123,920.28/x
  3. Step 3: Cross multiply
    188,163.91x = 259,881.82 × 123,920.28
  4. Step 4: Simplify right side
    188,163.91x = 32,204,627,591.51
  5. Step 5: Solve for x
    x = 32,204,627,591.51/188,163.91
  6. Step 6: Final answer
    x = 171,151.99

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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.