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Finding the Fourth Proportional to 114.18, 156.57 and 103.23

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Solution

The fourth proportional to 114.18, 156.57 and 103.23 is: 141.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.18 : 156.57 = 103.23 : x
  2. Step 2: Convert to fraction form
    114.18/156.57 = 103.23/x
  3. Step 3: Cross multiply
    114.18x = 156.57 × 103.23
  4. Step 4: Simplify right side
    114.18x = 16,162.72
  5. Step 5: Solve for x
    x = 16,162.72/114.18
  6. Step 6: Final answer
    x = 141.55

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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.