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Finding the Fourth Proportional to 139,680.48, 192,625.04 and 93,843.66

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Solution

The fourth proportional to 139,680.48, 192,625.04 and 93,843.66 is: 129,414.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,680.48 : 192,625.04 = 93,843.66 : x
  2. Step 2: Convert to fraction form
    139,680.48/192,625.04 = 93,843.66/x
  3. Step 3: Cross multiply
    139,680.48x = 192,625.04 × 93,843.66
  4. Step 4: Simplify right side
    139,680.48x = 18,076,638,761.25
  5. Step 5: Solve for x
    x = 18,076,638,761.25/139,680.48
  6. Step 6: Final answer
    x = 129,414.21

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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.