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Finding the Fourth Proportional to 144.99, 216.36 and 124.38

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Solution

The fourth proportional to 144.99, 216.36 and 124.38 is: 185.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.99 : 216.36 = 124.38 : x
  2. Step 2: Convert to fraction form
    144.99/216.36 = 124.38/x
  3. Step 3: Cross multiply
    144.99x = 216.36 × 124.38
  4. Step 4: Simplify right side
    144.99x = 26,910.86
  5. Step 5: Solve for x
    x = 26,910.86/144.99
  6. Step 6: Final answer
    x = 185.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.