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Finding the Fourth Proportional to 122,504.52, 169,074.54 and 74,785.52

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Solution

The fourth proportional to 122,504.52, 169,074.54 and 74,785.52 is: 103,215.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,504.52 : 169,074.54 = 74,785.52 : x
  2. Step 2: Convert to fraction form
    122,504.52/169,074.54 = 74,785.52/x
  3. Step 3: Cross multiply
    122,504.52x = 169,074.54 × 74,785.52
  4. Step 4: Simplify right side
    122,504.52x = 12,644,327,392.66
  5. Step 5: Solve for x
    x = 12,644,327,392.66/122,504.52
  6. Step 6: Final answer
    x = 103,215.19

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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.