Home / 136,136.82-187,885.56-82,440.51

Finding the Fourth Proportional to 136,136.82, 187,885.56 and 82,440.51

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Solution

The fourth proportional to 136,136.82, 187,885.56 and 82,440.51 is: 113,778.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,136.82 : 187,885.56 = 82,440.51 : x
  2. Step 2: Convert to fraction form
    136,136.82/187,885.56 = 82,440.51/x
  3. Step 3: Cross multiply
    136,136.82x = 187,885.56 × 82,440.51
  4. Step 4: Simplify right side
    136,136.82x = 15,489,381,388.04
  5. Step 5: Solve for x
    x = 15,489,381,388.04/136,136.82
  6. Step 6: Final answer
    x = 113,778.05

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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.