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Finding the Fourth Proportional to 139,222.68, 192,127.41 and 75,560.49

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Solution

The fourth proportional to 139,222.68, 192,127.41 and 75,560.49 is: 104,273.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,222.68 : 192,127.41 = 75,560.49 : x
  2. Step 2: Convert to fraction form
    139,222.68/192,127.41 = 75,560.49/x
  3. Step 3: Cross multiply
    139,222.68x = 192,127.41 × 75,560.49
  4. Step 4: Simplify right side
    139,222.68x = 14,517,241,242.03
  5. Step 5: Solve for x
    x = 14,517,241,242.03/139,222.68
  6. Step 6: Final answer
    x = 104,273.54

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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.