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Finding the Fourth Proportional to 122,571.97, 169,100.67 and 70,879.51

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Solution

The fourth proportional to 122,571.97, 169,100.67 and 70,879.51 is: 97,785.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,571.97 : 169,100.67 = 70,879.51 : x
  2. Step 2: Convert to fraction form
    122,571.97/169,100.67 = 70,879.51/x
  3. Step 3: Cross multiply
    122,571.97x = 169,100.67 × 70,879.51
  4. Step 4: Simplify right side
    122,571.97x = 11,985,772,630.27
  5. Step 5: Solve for x
    x = 11,985,772,630.27/122,571.97
  6. Step 6: Final answer
    x = 97,785.60

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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.