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Finding the Fourth Proportional to 96.48, 143.79 and 93.90

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Solution

The fourth proportional to 96.48, 143.79 and 93.90 is: 139.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.48 : 143.79 = 93.90 : x
  2. Step 2: Convert to fraction form
    96.48/143.79 = 93.90/x
  3. Step 3: Cross multiply
    96.48x = 143.79 × 93.90
  4. Step 4: Simplify right side
    96.48x = 13,501.88
  5. Step 5: Solve for x
    x = 13,501.88/96.48
  6. Step 6: Final answer
    x = 139.94

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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.