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Finding the Fourth Proportional to 122,859.54, 169,546.01 and 69,144.93

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Solution

The fourth proportional to 122,859.54, 169,546.01 and 69,144.93 is: 95,419.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,859.54 : 169,546.01 = 69,144.93 : x
  2. Step 2: Convert to fraction form
    122,859.54/169,546.01 = 69,144.93/x
  3. Step 3: Cross multiply
    122,859.54x = 169,546.01 × 69,144.93
  4. Step 4: Simplify right side
    122,859.54x = 11,723,246,647.50
  5. Step 5: Solve for x
    x = 11,723,246,647.50/122,859.54
  6. Step 6: Final answer
    x = 95,419.91

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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.