Home / 136,138.48-187,844.20-82,428.44

Finding the Fourth Proportional to 136,138.48, 187,844.20 and 82,428.44

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Solution

The fourth proportional to 136,138.48, 187,844.20 and 82,428.44 is: 113,734.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,138.48 : 187,844.20 = 82,428.44 : x
  2. Step 2: Convert to fraction form
    136,138.48/187,844.20 = 82,428.44/x
  3. Step 3: Cross multiply
    136,138.48x = 187,844.20 × 82,428.44
  4. Step 4: Simplify right side
    136,138.48x = 15,483,704,369.05
  5. Step 5: Solve for x
    x = 15,483,704,369.05/136,138.48
  6. Step 6: Final answer
    x = 113,734.96

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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.