Home / 131,427.80-197,141.70-91,338.20

Finding the Fourth Proportional to 131,427.80, 197,141.70 and 91,338.20

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Solution

The fourth proportional to 131,427.80, 197,141.70 and 91,338.20 is: 137,007.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,427.80 : 197,141.70 = 91,338.20 : x
  2. Step 2: Convert to fraction form
    131,427.80/197,141.70 = 91,338.20/x
  3. Step 3: Cross multiply
    131,427.80x = 197,141.70 × 91,338.20
  4. Step 4: Simplify right side
    131,427.80x = 18,006,568,022.94
  5. Step 5: Solve for x
    x = 18,006,568,022.94/131,427.80
  6. Step 6: Final answer
    x = 137,007.30

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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.