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Finding the Fourth Proportional to 125.48, 171.87 and 118.10

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Solution

The fourth proportional to 125.48, 171.87 and 118.10 is: 161.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.48 : 171.87 = 118.10 : x
  2. Step 2: Convert to fraction form
    125.48/171.87 = 118.10/x
  3. Step 3: Cross multiply
    125.48x = 171.87 × 118.10
  4. Step 4: Simplify right side
    125.48x = 20,297.26
  5. Step 5: Solve for x
    x = 20,297.26/125.48
  6. Step 6: Final answer
    x = 161.76

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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.