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Finding the Fourth Proportional to 136.09, 187.86 and 114.22

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Solution

The fourth proportional to 136.09, 187.86 and 114.22 is: 157.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.09 : 187.86 = 114.22 : x
  2. Step 2: Convert to fraction form
    136.09/187.86 = 114.22/x
  3. Step 3: Cross multiply
    136.09x = 187.86 × 114.22
  4. Step 4: Simplify right side
    136.09x = 21,457.37
  5. Step 5: Solve for x
    x = 21,457.37/136.09
  6. Step 6: Final answer
    x = 157.67

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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.