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Finding the Fourth Proportional to 122,769.68, 169,422.20 and 69,054.74

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Solution

The fourth proportional to 122,769.68, 169,422.20 and 69,054.74 is: 95,295.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,769.68 : 169,422.20 = 69,054.74 : x
  2. Step 2: Convert to fraction form
    122,769.68/169,422.20 = 69,054.74/x
  3. Step 3: Cross multiply
    122,769.68x = 169,422.20 × 69,054.74
  4. Step 4: Simplify right side
    122,769.68x = 11,699,404,778.84
  5. Step 5: Solve for x
    x = 11,699,404,778.84/122,769.68
  6. Step 6: Final answer
    x = 95,295.56

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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.