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Finding the Fourth Proportional to 122,689.22, 169,310.93 and 68,974.34

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Solution

The fourth proportional to 122,689.22, 169,310.93 and 68,974.34 is: 95,184.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,689.22 : 169,310.93 = 68,974.34 : x
  2. Step 2: Convert to fraction form
    122,689.22/169,310.93 = 68,974.34/x
  3. Step 3: Cross multiply
    122,689.22x = 169,310.93 × 68,974.34
  4. Step 4: Simplify right side
    122,689.22x = 11,678,108,460.11
  5. Step 5: Solve for x
    x = 11,678,108,460.11/122,689.22
  6. Step 6: Final answer
    x = 95,184.47

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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.