Home / 139,679.33-192,761.51-76,021.16

Finding the Fourth Proportional to 139,679.33, 192,761.51 and 76,021.16

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Solution

The fourth proportional to 139,679.33, 192,761.51 and 76,021.16 is: 104,911.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,679.33 : 192,761.51 = 76,021.16 : x
  2. Step 2: Convert to fraction form
    139,679.33/192,761.51 = 76,021.16/x
  3. Step 3: Cross multiply
    139,679.33x = 192,761.51 × 76,021.16
  4. Step 4: Simplify right side
    139,679.33x = 14,653,952,249.64
  5. Step 5: Solve for x
    x = 14,653,952,249.64/139,679.33
  6. Step 6: Final answer
    x = 104,911.39

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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.