Home / 138,185.45-207,266.26-84,136.11

Finding the Fourth Proportional to 138,185.45, 207,266.26 and 84,136.11

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Solution

The fourth proportional to 138,185.45, 207,266.26 and 84,136.11 is: 126,196.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,185.45 : 207,266.26 = 84,136.11 : x
  2. Step 2: Convert to fraction form
    138,185.45/207,266.26 = 84,136.11/x
  3. Step 3: Cross multiply
    138,185.45x = 207,266.26 × 84,136.11
  4. Step 4: Simplify right side
    138,185.45x = 17,438,576,850.65
  5. Step 5: Solve for x
    x = 17,438,576,850.65/138,185.45
  6. Step 6: Final answer
    x = 126,196.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.