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Finding the Fourth Proportional to 125,508.78, 173,208.24 and 68,921.37

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Solution

The fourth proportional to 125,508.78, 173,208.24 and 68,921.37 is: 95,114.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,508.78 : 173,208.24 = 68,921.37 : x
  2. Step 2: Convert to fraction form
    125,508.78/173,208.24 = 68,921.37/x
  3. Step 3: Cross multiply
    125,508.78x = 173,208.24 × 68,921.37
  4. Step 4: Simplify right side
    125,508.78x = 11,937,749,196.09
  5. Step 5: Solve for x
    x = 11,937,749,196.09/125,508.78
  6. Step 6: Final answer
    x = 95,114.85

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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.