Home / 139,564.14-192,602.82-79,137.30

Finding the Fourth Proportional to 139,564.14, 192,602.82 and 79,137.30

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Solution

The fourth proportional to 139,564.14, 192,602.82 and 79,137.30 is: 109,211.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,564.14 : 192,602.82 = 79,137.30 : x
  2. Step 2: Convert to fraction form
    139,564.14/192,602.82 = 79,137.30/x
  3. Step 3: Cross multiply
    139,564.14x = 192,602.82 × 79,137.30
  4. Step 4: Simplify right side
    139,564.14x = 15,242,067,147.19
  5. Step 5: Solve for x
    x = 15,242,067,147.19/139,564.14
  6. Step 6: Final answer
    x = 109,211.92

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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.