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Finding the Fourth Proportional to 103,618.85, 155,505.08 and 68,546.85

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Solution

The fourth proportional to 103,618.85, 155,505.08 and 68,546.85 is: 102,871.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,618.85 : 155,505.08 = 68,546.85 : x
  2. Step 2: Convert to fraction form
    103,618.85/155,505.08 = 68,546.85/x
  3. Step 3: Cross multiply
    103,618.85x = 155,505.08 × 68,546.85
  4. Step 4: Simplify right side
    103,618.85x = 10,659,383,393.00
  5. Step 5: Solve for x
    x = 10,659,383,393.00/103,618.85
  6. Step 6: Final answer
    x = 102,871.08

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.