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Finding the Fourth Proportional to 125,645.78, 173,388.25 and 68,283.74

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Solution

The fourth proportional to 125,645.78, 173,388.25 and 68,283.74 is: 94,229.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,645.78 : 173,388.25 = 68,283.74 : x
  2. Step 2: Convert to fraction form
    125,645.78/173,388.25 = 68,283.74/x
  3. Step 3: Cross multiply
    125,645.78x = 173,388.25 × 68,283.74
  4. Step 4: Simplify right side
    125,645.78x = 11,839,598,182.06
  5. Step 5: Solve for x
    x = 11,839,598,182.06/125,645.78
  6. Step 6: Final answer
    x = 94,229.97

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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.