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Finding the Fourth Proportional to 122,141.34, 168,564.92 and 68,438.34

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Solution

The fourth proportional to 122,141.34, 168,564.92 and 68,438.34 is: 94,450.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,141.34 : 168,564.92 = 68,438.34 : x
  2. Step 2: Convert to fraction form
    122,141.34/168,564.92 = 68,438.34/x
  3. Step 3: Cross multiply
    122,141.34x = 168,564.92 × 68,438.34
  4. Step 4: Simplify right side
    122,141.34x = 11,536,302,964.84
  5. Step 5: Solve for x
    x = 11,536,302,964.84/122,141.34
  6. Step 6: Final answer
    x = 94,450.44

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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.