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Finding the Fourth Proportional to 122,470.82, 183,722.06 and 84,449.42

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Solution

The fourth proportional to 122,470.82, 183,722.06 and 84,449.42 is: 126,685.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,470.82 : 183,722.06 = 84,449.42 : x
  2. Step 2: Convert to fraction form
    122,470.82/183,722.06 = 84,449.42/x
  3. Step 3: Cross multiply
    122,470.82x = 183,722.06 × 84,449.42
  4. Step 4: Simplify right side
    122,470.82x = 15,515,220,700.72
  5. Step 5: Solve for x
    x = 15,515,220,700.72/122,470.82
  6. Step 6: Final answer
    x = 126,685.04

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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.