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Finding the Fourth Proportional to 114.36, 157.30 and 101.67

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Solution

The fourth proportional to 114.36, 157.30 and 101.67 is: 139.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.36 : 157.30 = 101.67 : x
  2. Step 2: Convert to fraction form
    114.36/157.30 = 101.67/x
  3. Step 3: Cross multiply
    114.36x = 157.30 × 101.67
  4. Step 4: Simplify right side
    114.36x = 15,992.69
  5. Step 5: Solve for x
    x = 15,992.69/114.36
  6. Step 6: Final answer
    x = 139.85

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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.