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Finding the Fourth Proportional to 122,485.27, 169,028.25 and 68,768.92

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Solution

The fourth proportional to 122,485.27, 169,028.25 and 68,768.92 is: 94,900.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,485.27 : 169,028.25 = 68,768.92 : x
  2. Step 2: Convert to fraction form
    122,485.27/169,028.25 = 68,768.92/x
  3. Step 3: Cross multiply
    122,485.27x = 169,028.25 × 68,768.92
  4. Step 4: Simplify right side
    122,485.27x = 11,623,890,201.99
  5. Step 5: Solve for x
    x = 11,623,890,201.99/122,485.27
  6. Step 6: Final answer
    x = 94,900.31

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1.5x scale

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.