Home / 138,132.31-207,198.46-91,374.25

Finding the Fourth Proportional to 138,132.31, 207,198.46 and 91,374.25

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Solution

The fourth proportional to 138,132.31, 207,198.46 and 91,374.25 is: 137,061.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,132.31 : 207,198.46 = 91,374.25 : x
  2. Step 2: Convert to fraction form
    138,132.31/207,198.46 = 91,374.25/x
  3. Step 3: Cross multiply
    138,132.31x = 207,198.46 × 91,374.25
  4. Step 4: Simplify right side
    138,132.31x = 18,932,602,847.66
  5. Step 5: Solve for x
    x = 18,932,602,847.66/138,132.31
  6. Step 6: Final answer
    x = 137,061.37

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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.