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Finding the Fourth Proportional to 125,588.78, 188,447.82 and 69,418.46

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Solution

The fourth proportional to 125,588.78, 188,447.82 and 69,418.46 is: 104,163.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,588.78 : 188,447.82 = 69,418.46 : x
  2. Step 2: Convert to fraction form
    125,588.78/188,447.82 = 69,418.46/x
  3. Step 3: Cross multiply
    125,588.78x = 188,447.82 × 69,418.46
  4. Step 4: Simplify right side
    125,588.78x = 13,081,757,454.76
  5. Step 5: Solve for x
    x = 13,081,757,454.76/125,588.78
  6. Step 6: Final answer
    x = 104,163.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.