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Finding the Fourth Proportional to 126,073.14, 173,978.64 and 68,712.96

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Solution

The fourth proportional to 126,073.14, 173,978.64 and 68,712.96 is: 94,822.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,073.14 : 173,978.64 = 68,712.96 : x
  2. Step 2: Convert to fraction form
    126,073.14/173,978.64 = 68,712.96/x
  3. Step 3: Cross multiply
    126,073.14x = 173,978.64 × 68,712.96
  4. Step 4: Simplify right side
    126,073.14x = 11,954,587,331.17
  5. Step 5: Solve for x
    x = 11,954,587,331.17/126,073.14
  6. Step 6: Final answer
    x = 94,822.63

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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.