Home / 91,661.20-137,382.45-82,257.10

Finding the Fourth Proportional to 91,661.20, 137,382.45 and 82,257.10

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Solution

The fourth proportional to 91,661.20, 137,382.45 and 82,257.10 is: 123,287.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,661.20 : 137,382.45 = 82,257.10 : x
  2. Step 2: Convert to fraction form
    91,661.20/137,382.45 = 82,257.10/x
  3. Step 3: Cross multiply
    91,661.20x = 137,382.45 × 82,257.10
  4. Step 4: Simplify right side
    91,661.20x = 11,300,681,927.90
  5. Step 5: Solve for x
    x = 11,300,681,927.90/91,661.20
  6. Step 6: Final answer
    x = 123,287.52

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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.