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Finding the Fourth Proportional to 122,626.48, 169,302 and 80,256.64

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Solution

The fourth proportional to 122,626.48, 169,302 and 80,256.64 is: 110,804.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,626.48 : 169,302 = 80,256.64 : x
  2. Step 2: Convert to fraction form
    122,626.48/169,302 = 80,256.64/x
  3. Step 3: Cross multiply
    122,626.48x = 169,302 × 80,256.64
  4. Step 4: Simplify right side
    122,626.48x = 13,587,609,665.28
  5. Step 5: Solve for x
    x = 13,587,609,665.28/122,626.48
  6. Step 6: Final answer
    x = 110,804.86

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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.