Home / 139,844.67-192,986.97-79,416.57

Finding the Fourth Proportional to 139,844.67, 192,986.97 and 79,416.57

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Solution

The fourth proportional to 139,844.67, 192,986.97 and 79,416.57 is: 109,595.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,844.67 : 192,986.97 = 79,416.57 : x
  2. Step 2: Convert to fraction form
    139,844.67/192,986.97 = 79,416.57/x
  3. Step 3: Cross multiply
    139,844.67x = 192,986.97 × 79,416.57
  4. Step 4: Simplify right side
    139,844.67x = 15,326,363,212.09
  5. Step 5: Solve for x
    x = 15,326,363,212.09/139,844.67
  6. Step 6: Final answer
    x = 109,595.62

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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.