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Finding the Fourth Proportional to 91,187.67, 125,849.66 and 75,847.15

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Solution

The fourth proportional to 91,187.67, 125,849.66 and 75,847.15 is: 104,677.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,187.67 : 125,849.66 = 75,847.15 : x
  2. Step 2: Convert to fraction form
    91,187.67/125,849.66 = 75,847.15/x
  3. Step 3: Cross multiply
    91,187.67x = 125,849.66 × 75,847.15
  4. Step 4: Simplify right side
    91,187.67x = 9,545,338,039.47
  5. Step 5: Solve for x
    x = 9,545,338,039.47/91,187.67
  6. Step 6: Final answer
    x = 104,677.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.