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Finding the Fourth Proportional to 139,676.69, 192,747.84 and 76,014.33

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Solution

The fourth proportional to 139,676.69, 192,747.84 and 76,014.33 is: 104,896.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,676.69 : 192,747.84 = 76,014.33 : x
  2. Step 2: Convert to fraction form
    139,676.69/192,747.84 = 76,014.33/x
  3. Step 3: Cross multiply
    139,676.69x = 192,747.84 × 76,014.33
  4. Step 4: Simplify right side
    139,676.69x = 14,651,597,916.55
  5. Step 5: Solve for x
    x = 14,651,597,916.55/139,676.69
  6. Step 6: Final answer
    x = 104,896.52

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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.