Home / 117,231.49-161,690.19-100,906.48

Finding the Fourth Proportional to 117,231.49, 161,690.19 and 100,906.48

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Solution

The fourth proportional to 117,231.49, 161,690.19 and 100,906.48 is: 139,174.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,231.49 : 161,690.19 = 100,906.48 : x
  2. Step 2: Convert to fraction form
    117,231.49/161,690.19 = 100,906.48/x
  3. Step 3: Cross multiply
    117,231.49x = 161,690.19 × 100,906.48
  4. Step 4: Simplify right side
    117,231.49x = 16,315,587,923.43
  5. Step 5: Solve for x
    x = 16,315,587,923.43/117,231.49
  6. Step 6: Final answer
    x = 139,174.11

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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.