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Finding the Fourth Proportional to 125,508.78, 173,203.32 and 68,921.34

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Solution

The fourth proportional to 125,508.78, 173,203.32 and 68,921.34 is: 95,112.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,508.78 : 173,203.32 = 68,921.34 : x
  2. Step 2: Convert to fraction form
    125,508.78/173,203.32 = 68,921.34/x
  3. Step 3: Cross multiply
    125,508.78x = 173,203.32 × 68,921.34
  4. Step 4: Simplify right side
    125,508.78x = 11,937,404,906.85
  5. Step 5: Solve for x
    x = 11,937,404,906.85/125,508.78
  6. Step 6: Final answer
    x = 95,112.11

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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.