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Finding the Fourth Proportional to 122,007, 168,369.62 and 68,292

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Solution

The fourth proportional to 122,007, 168,369.62 and 68,292 is: 94,242.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,007 : 168,369.62 = 68,292 : x
  2. Step 2: Convert to fraction form
    122,007/168,369.62 = 68,292/x
  3. Step 3: Cross multiply
    122,007x = 168,369.62 × 68,292
  4. Step 4: Simplify right side
    122,007x = 11,498,298,089.04
  5. Step 5: Solve for x
    x = 11,498,298,089.04/122,007
  6. Step 6: Final answer
    x = 94,242.94

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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.