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Finding the Third Proportional to 114.75 and 139.50

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Solution

The third proportional to 114.75 and 139.50 is: 169.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.75 : 139.50 = 139.50 : x
  2. Step 2: Convert to fraction form
    114.75/139.50 = 139.50/x
  3. Step 3: Cross multiply
    114.75x = 139.50 × 139.50
  4. Step 4: Simplify right side
    114.75x = 19,460.25
  5. Step 5: Solve for x
    x = 19,460.25/114.75
  6. Step 6: Final answer
    x = 169.59

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These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.