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Finding the Fourth Proportional to 117,149.37, 161,665.92 and 63,434.49

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Solution

The fourth proportional to 117,149.37, 161,665.92 and 63,434.49 is: 87,539.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,149.37 : 161,665.92 = 63,434.49 : x
  2. Step 2: Convert to fraction form
    117,149.37/161,665.92 = 63,434.49/x
  3. Step 3: Cross multiply
    117,149.37x = 161,665.92 × 63,434.49
  4. Step 4: Simplify right side
    117,149.37x = 10,255,195,185.58
  5. Step 5: Solve for x
    x = 10,255,195,185.58/117,149.37
  6. Step 6: Final answer
    x = 87,539.48

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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.