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Finding the Fourth Proportional to 96.99, 144.34 and 93.75

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Solution

The fourth proportional to 96.99, 144.34 and 93.75 is: 139.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.99 : 144.34 = 93.75 : x
  2. Step 2: Convert to fraction form
    96.99/144.34 = 93.75/x
  3. Step 3: Cross multiply
    96.99x = 144.34 × 93.75
  4. Step 4: Simplify right side
    96.99x = 13,531.88
  5. Step 5: Solve for x
    x = 13,531.88/96.99
  6. Step 6: Final answer
    x = 139.52

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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.