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Finding the Fourth Proportional to 139,534.29, 192,553.29 and 79,110.54

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Solution

The fourth proportional to 139,534.29, 192,553.29 and 79,110.54 is: 109,170.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,534.29 : 192,553.29 = 79,110.54 : x
  2. Step 2: Convert to fraction form
    139,534.29/192,553.29 = 79,110.54/x
  3. Step 3: Cross multiply
    139,534.29x = 192,553.29 × 79,110.54
  4. Step 4: Simplify right side
    139,534.29x = 15,232,994,750.68
  5. Step 5: Solve for x
    x = 15,232,994,750.68/139,534.29
  6. Step 6: Final answer
    x = 109,170.26

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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.