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Finding the Fourth Proportional to 104.87, 144.65 and 68.01

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Solution

The fourth proportional to 104.87, 144.65 and 68.01 is: 93.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    104.87 : 144.65 = 68.01 : x
  2. Step 2: Convert to fraction form
    104.87/144.65 = 68.01/x
  3. Step 3: Cross multiply
    104.87x = 144.65 × 68.01
  4. Step 4: Simplify right side
    104.87x = 9,837.31
  5. Step 5: Solve for x
    x = 9,837.31/104.87
  6. Step 6: Final answer
    x = 93.81

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.