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Finding the Fourth Proportional to 117,478.37, 161,997.60 and 69,722.49

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Solution

The fourth proportional to 117,478.37, 161,997.60 and 69,722.49 is: 96,144.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,478.37 : 161,997.60 = 69,722.49 : x
  2. Step 2: Convert to fraction form
    117,478.37/161,997.60 = 69,722.49/x
  3. Step 3: Cross multiply
    117,478.37x = 161,997.60 × 69,722.49
  4. Step 4: Simplify right side
    117,478.37x = 11,294,876,003.74
  5. Step 5: Solve for x
    x = 11,294,876,003.74/117,478.37
  6. Step 6: Final answer
    x = 96,144.31

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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.