Home / 138,399.30-207,567.09-54,161.46

Finding the Fourth Proportional to 138,399.30, 207,567.09 and 54,161.46

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Solution

The fourth proportional to 138,399.30, 207,567.09 and 54,161.46 is: 81,229.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,399.30 : 207,567.09 = 54,161.46 : x
  2. Step 2: Convert to fraction form
    138,399.30/207,567.09 = 54,161.46/x
  3. Step 3: Cross multiply
    138,399.30x = 207,567.09 × 54,161.46
  4. Step 4: Simplify right side
    138,399.30x = 11,242,136,642.35
  5. Step 5: Solve for x
    x = 11,242,136,642.35/138,399.30
  6. Step 6: Final answer
    x = 81,229.72

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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.