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Finding the Fourth Proportional to 122,777, 169,440.82 and 69,067.16

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Solution

The fourth proportional to 122,777, 169,440.82 and 69,067.16 is: 95,317.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,777 : 169,440.82 = 69,067.16 : x
  2. Step 2: Convert to fraction form
    122,777/169,440.82 = 69,067.16/x
  3. Step 3: Cross multiply
    122,777x = 169,440.82 × 69,067.16
  4. Step 4: Simplify right side
    122,777x = 11,702,796,225.47
  5. Step 5: Solve for x
    x = 11,702,796,225.47/122,777
  6. Step 6: Final answer
    x = 95,317.50

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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.