Home / 138,450.56-207,374.20-91,012.08

Finding the Fourth Proportional to 138,450.56, 207,374.20 and 91,012.08

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Solution

The fourth proportional to 138,450.56, 207,374.20 and 91,012.08 is: 136,319.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,450.56 : 207,374.20 = 91,012.08 : x
  2. Step 2: Convert to fraction form
    138,450.56/207,374.20 = 91,012.08/x
  3. Step 3: Cross multiply
    138,450.56x = 207,374.20 × 91,012.08
  4. Step 4: Simplify right side
    138,450.56x = 18,873,557,280.34
  5. Step 5: Solve for x
    x = 18,873,557,280.34/138,450.56
  6. Step 6: Final answer
    x = 136,319.83

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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.