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Finding the Fourth Proportional to 122,481.40, 183,527.70 and 80,879.80

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Solution

The fourth proportional to 122,481.40, 183,527.70 and 80,879.80 is: 121,191.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,481.40 : 183,527.70 = 80,879.80 : x
  2. Step 2: Convert to fraction form
    122,481.40/183,527.70 = 80,879.80/x
  3. Step 3: Cross multiply
    122,481.40x = 183,527.70 × 80,879.80
  4. Step 4: Simplify right side
    122,481.40x = 14,843,683,670.46
  5. Step 5: Solve for x
    x = 14,843,683,670.46/122,481.40
  6. Step 6: Final answer
    x = 121,191.33

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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.