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Finding the Fourth Proportional to 91,883.67, 126,834.57 and 89,355.66

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Solution

The fourth proportional to 91,883.67, 126,834.57 and 89,355.66 is: 123,344.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,883.67 : 126,834.57 = 89,355.66 : x
  2. Step 2: Convert to fraction form
    91,883.67/126,834.57 = 89,355.66/x
  3. Step 3: Cross multiply
    91,883.67x = 126,834.57 × 89,355.66
  4. Step 4: Simplify right side
    91,883.67x = 11,333,386,713.17
  5. Step 5: Solve for x
    x = 11,333,386,713.17/91,883.67
  6. Step 6: Final answer
    x = 123,344.95

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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.