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Finding the Fourth Proportional to 103,635.67, 155,453.49 and 68,567.14

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Solution

The fourth proportional to 103,635.67, 155,453.49 and 68,567.14 is: 102,850.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,635.67 : 155,453.49 = 68,567.14 : x
  2. Step 2: Convert to fraction form
    103,635.67/155,453.49 = 68,567.14/x
  3. Step 3: Cross multiply
    103,635.67x = 155,453.49 × 68,567.14
  4. Step 4: Simplify right side
    103,635.67x = 10,659,001,212.32
  5. Step 5: Solve for x
    x = 10,659,001,212.32/103,635.67
  6. Step 6: Final answer
    x = 102,850.70

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1.5x scale

Why These Related Problems?

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