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Finding the Fourth Proportional to 139,755.43, 192,889.80 and 88,827.49

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Solution

The fourth proportional to 139,755.43, 192,889.80 and 88,827.49 is: 122,599.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,755.43 : 192,889.80 = 88,827.49 : x
  2. Step 2: Convert to fraction form
    139,755.43/192,889.80 = 88,827.49/x
  3. Step 3: Cross multiply
    139,755.43x = 192,889.80 × 88,827.49
  4. Step 4: Simplify right side
    139,755.43x = 17,133,916,780.60
  5. Step 5: Solve for x
    x = 17,133,916,780.60/139,755.43
  6. Step 6: Final answer
    x = 122,599.29

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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.