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Finding the Fourth Proportional to 122,471.86, 168,999.50 and 68,744.56

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Solution

The fourth proportional to 122,471.86, 168,999.50 and 68,744.56 is: 94,860.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,471.86 : 168,999.50 = 68,744.56 : x
  2. Step 2: Convert to fraction form
    122,471.86/168,999.50 = 68,744.56/x
  3. Step 3: Cross multiply
    122,471.86x = 168,999.50 × 68,744.56
  4. Step 4: Simplify right side
    122,471.86x = 11,617,796,267.72
  5. Step 5: Solve for x
    x = 11,617,796,267.72/122,471.86
  6. Step 6: Final answer
    x = 94,860.94

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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.