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Finding the Fourth Proportional to 122,958.60, 169,684.74 and 75,201.72

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Solution

The fourth proportional to 122,958.60, 169,684.74 and 75,201.72 is: 103,779.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,958.60 : 169,684.74 = 75,201.72 : x
  2. Step 2: Convert to fraction form
    122,958.60/169,684.74 = 75,201.72/x
  3. Step 3: Cross multiply
    122,958.60x = 169,684.74 × 75,201.72
  4. Step 4: Simplify right side
    122,958.60x = 12,760,584,305.75
  5. Step 5: Solve for x
    x = 12,760,584,305.75/122,958.60
  6. Step 6: Final answer
    x = 103,779.52

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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.