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Finding the Fourth Proportional to 122,467.88, 169,002.78 and 68,755.16

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Solution

The fourth proportional to 122,467.88, 169,002.78 and 68,755.16 is: 94,880.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,467.88 : 169,002.78 = 68,755.16 : x
  2. Step 2: Convert to fraction form
    122,467.88/169,002.78 = 68,755.16/x
  3. Step 3: Cross multiply
    122,467.88x = 169,002.78 × 68,755.16
  4. Step 4: Simplify right side
    122,467.88x = 11,619,813,179.34
  5. Step 5: Solve for x
    x = 11,619,813,179.34/122,467.88
  6. Step 6: Final answer
    x = 94,880.50

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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.