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Finding the Fourth Proportional to 139,321.56, 192,322.60 and 94,060.85

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Solution

The fourth proportional to 139,321.56, 192,322.60 and 94,060.85 is: 129,843.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,321.56 : 192,322.60 = 94,060.85 : x
  2. Step 2: Convert to fraction form
    139,321.56/192,322.60 = 94,060.85/x
  3. Step 3: Cross multiply
    139,321.56x = 192,322.60 × 94,060.85
  4. Step 4: Simplify right side
    139,321.56x = 18,090,026,562.54
  5. Step 5: Solve for x
    x = 18,090,026,562.54/139,321.56
  6. Step 6: Final answer
    x = 129,843.70

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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.