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Finding the Fourth Proportional to 122,402.26, 168,914.73 and 68,687.52

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Solution

The fourth proportional to 122,402.26, 168,914.73 and 68,687.52 is: 94,788.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,402.26 : 168,914.73 = 68,687.52 : x
  2. Step 2: Convert to fraction form
    122,402.26/168,914.73 = 68,687.52/x
  3. Step 3: Cross multiply
    122,402.26x = 168,914.73 × 68,687.52
  4. Step 4: Simplify right side
    122,402.26x = 11,602,333,895.17
  5. Step 5: Solve for x
    x = 11,602,333,895.17/122,402.26
  6. Step 6: Final answer
    x = 94,788.56

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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.