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Finding the Fourth Proportional to 122,351.67, 168,850.87 and 71,365.41

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Solution

The fourth proportional to 122,351.67, 168,850.87 and 71,365.41 is: 98,487.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,351.67 : 168,850.87 = 71,365.41 : x
  2. Step 2: Convert to fraction form
    122,351.67/168,850.87 = 71,365.41/x
  3. Step 3: Cross multiply
    122,351.67x = 168,850.87 × 71,365.41
  4. Step 4: Simplify right side
    122,351.67x = 12,050,111,387.99
  5. Step 5: Solve for x
    x = 12,050,111,387.99/122,351.67
  6. Step 6: Final answer
    x = 98,487.51

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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.