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Finding the Fourth Proportional to 139,592.99, 192,655.44 and 82,229.36

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Solution

The fourth proportional to 139,592.99, 192,655.44 and 82,229.36 is: 113,486.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,592.99 : 192,655.44 = 82,229.36 : x
  2. Step 2: Convert to fraction form
    139,592.99/192,655.44 = 82,229.36/x
  3. Step 3: Cross multiply
    139,592.99x = 192,655.44 × 82,229.36
  4. Step 4: Simplify right side
    139,592.99x = 15,841,932,568.44
  5. Step 5: Solve for x
    x = 15,841,932,568.44/139,592.99
  6. Step 6: Final answer
    x = 113,486.59

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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.