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Finding the Fourth Proportional to 117,282.36, 161,850.24 and 68,916.90

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Solution

The fourth proportional to 117,282.36, 161,850.24 and 68,916.90 is: 95,105.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,282.36 : 161,850.24 = 68,916.90 : x
  2. Step 2: Convert to fraction form
    117,282.36/161,850.24 = 68,916.90/x
  3. Step 3: Cross multiply
    117,282.36x = 161,850.24 × 68,916.90
  4. Step 4: Simplify right side
    117,282.36x = 11,154,216,805.06
  5. Step 5: Solve for x
    x = 11,154,216,805.06/117,282.36
  6. Step 6: Final answer
    x = 95,105.66

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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.