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Finding the Fourth Proportional to 114.87, 157.53 and 109.41

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Solution

The fourth proportional to 114.87, 157.53 and 109.41 is: 150.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.87 : 157.53 = 109.41 : x
  2. Step 2: Convert to fraction form
    114.87/157.53 = 109.41/x
  3. Step 3: Cross multiply
    114.87x = 157.53 × 109.41
  4. Step 4: Simplify right side
    114.87x = 17,235.36
  5. Step 5: Solve for x
    x = 17,235.36/114.87
  6. Step 6: Final answer
    x = 150.04

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.