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Finding the Fourth Proportional to 100,134.96, 137,450 and 88,550.60

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Solution

The fourth proportional to 100,134.96, 137,450 and 88,550.60 is: 121,548.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,134.96 : 137,450 = 88,550.60 : x
  2. Step 2: Convert to fraction form
    100,134.96/137,450 = 88,550.60/x
  3. Step 3: Cross multiply
    100,134.96x = 137,450 × 88,550.60
  4. Step 4: Simplify right side
    100,134.96x = 12,171,279,970
  5. Step 5: Solve for x
    x = 12,171,279,970/100,134.96
  6. Step 6: Final answer
    x = 121,548.76

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.