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Finding the Fourth Proportional to 122,858.56, 169,501.44 and 80,440.48

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Solution

The fourth proportional to 122,858.56, 169,501.44 and 80,440.48 is: 110,979.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,858.56 : 169,501.44 = 80,440.48 : x
  2. Step 2: Convert to fraction form
    122,858.56/169,501.44 = 80,440.48/x
  3. Step 3: Cross multiply
    122,858.56x = 169,501.44 × 80,440.48
  4. Step 4: Simplify right side
    122,858.56x = 13,634,777,194.29
  5. Step 5: Solve for x
    x = 13,634,777,194.29/122,858.56
  6. Step 6: Final answer
    x = 110,979.46

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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.