Home / 136,822.54-188,839.68-81,635.42

Finding the Fourth Proportional to 136,822.54, 188,839.68 and 81,635.42

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Solution

The fourth proportional to 136,822.54, 188,839.68 and 81,635.42 is: 112,671.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,822.54 : 188,839.68 = 81,635.42 : x
  2. Step 2: Convert to fraction form
    136,822.54/188,839.68 = 81,635.42/x
  3. Step 3: Cross multiply
    136,822.54x = 188,839.68 × 81,635.42
  4. Step 4: Simplify right side
    136,822.54x = 15,416,006,589.47
  5. Step 5: Solve for x
    x = 15,416,006,589.47/136,822.54
  6. Step 6: Final answer
    x = 112,671.54

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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.