Home / 91,824.60-137,736.90-81,491.03

Finding the Fourth Proportional to 91,824.60, 137,736.90 and 81,491.03

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Solution

The fourth proportional to 91,824.60, 137,736.90 and 81,491.03 is: 122,236.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,824.60 : 137,736.90 = 81,491.03 : x
  2. Step 2: Convert to fraction form
    91,824.60/137,736.90 = 81,491.03/x
  3. Step 3: Cross multiply
    91,824.60x = 137,736.90 × 81,491.03
  4. Step 4: Simplify right side
    91,824.60x = 11,224,321,850.01
  5. Step 5: Solve for x
    x = 11,224,321,850.01/91,824.60
  6. Step 6: Final answer
    x = 122,236.55

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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.