Home / 138,395.88-207,611.42-54,145.26

Finding the Fourth Proportional to 138,395.88, 207,611.42 and 54,145.26

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Solution

The fourth proportional to 138,395.88, 207,611.42 and 54,145.26 is: 81,224.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,395.88 : 207,611.42 = 54,145.26 : x
  2. Step 2: Convert to fraction form
    138,395.88/207,611.42 = 54,145.26/x
  3. Step 3: Cross multiply
    138,395.88x = 207,611.42 × 54,145.26
  4. Step 4: Simplify right side
    138,395.88x = 11,241,174,314.87
  5. Step 5: Solve for x
    x = 11,241,174,314.87/138,395.88
  6. Step 6: Final answer
    x = 81,224.78

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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.