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Finding the Fourth Proportional to 117,133.85, 161,578.73 and 74,099.99

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Solution

The fourth proportional to 117,133.85, 161,578.73 and 74,099.99 is: 102,216.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,133.85 : 161,578.73 = 74,099.99 : x
  2. Step 2: Convert to fraction form
    117,133.85/161,578.73 = 74,099.99/x
  3. Step 3: Cross multiply
    117,133.85x = 161,578.73 × 74,099.99
  4. Step 4: Simplify right side
    117,133.85x = 11,972,981,906.71
  5. Step 5: Solve for x
    x = 11,972,981,906.71/117,133.85
  6. Step 6: Final answer
    x = 102,216.24

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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.