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Finding the Fourth Proportional to 91,137.33, 124,858.82 and 87,728.95

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Solution

The fourth proportional to 91,137.33, 124,858.82 and 87,728.95 is: 120,189.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,137.33 : 124,858.82 = 87,728.95 : x
  2. Step 2: Convert to fraction form
    91,137.33/124,858.82 = 87,728.95/x
  3. Step 3: Cross multiply
    91,137.33x = 124,858.82 × 87,728.95
  4. Step 4: Simplify right side
    91,137.33x = 10,953,733,176.84
  5. Step 5: Solve for x
    x = 10,953,733,176.84/91,137.33
  6. Step 6: Final answer
    x = 120,189.31

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These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.