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Finding the Fourth Proportional to 122,474.86, 169,003.64 and 68,747.56

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Solution

The fourth proportional to 122,474.86, 169,003.64 and 68,747.56 is: 94,865.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,474.86 : 169,003.64 = 68,747.56 : x
  2. Step 2: Convert to fraction form
    122,474.86/169,003.64 = 68,747.56/x
  3. Step 3: Cross multiply
    122,474.86x = 169,003.64 × 68,747.56
  4. Step 4: Simplify right side
    122,474.86x = 11,618,587,881.12
  5. Step 5: Solve for x
    x = 11,618,587,881.12/122,474.86
  6. Step 6: Final answer
    x = 94,865.08

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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.