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Finding the Fourth Proportional to 122,900.94, 169,606.44 and 69,187.86

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Solution

The fourth proportional to 122,900.94, 169,606.44 and 69,187.86 is: 95,481.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,900.94 : 169,606.44 = 69,187.86 : x
  2. Step 2: Convert to fraction form
    122,900.94/169,606.44 = 69,187.86/x
  3. Step 3: Cross multiply
    122,900.94x = 169,606.44 × 69,187.86
  4. Step 4: Simplify right side
    122,900.94x = 11,734,706,625.82
  5. Step 5: Solve for x
    x = 11,734,706,625.82/122,900.94
  6. Step 6: Final answer
    x = 95,481.02

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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.