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Finding the Fourth Proportional to 91,733.80, 137,600.70 and 80,069.80

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Solution

The fourth proportional to 91,733.80, 137,600.70 and 80,069.80 is: 120,104.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,733.80 : 137,600.70 = 80,069.80 : x
  2. Step 2: Convert to fraction form
    91,733.80/137,600.70 = 80,069.80/x
  3. Step 3: Cross multiply
    91,733.80x = 137,600.70 × 80,069.80
  4. Step 4: Simplify right side
    91,733.80x = 11,017,660,528.86
  5. Step 5: Solve for x
    x = 11,017,660,528.86/91,733.80
  6. Step 6: Final answer
    x = 120,104.70

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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.