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Finding the Fourth Proportional to 123.35, 184.88 and 79.37

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Solution

The fourth proportional to 123.35, 184.88 and 79.37 is: 118.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    123.35 : 184.88 = 79.37 : x
  2. Step 2: Convert to fraction form
    123.35/184.88 = 79.37/x
  3. Step 3: Cross multiply
    123.35x = 184.88 × 79.37
  4. Step 4: Simplify right side
    123.35x = 14,673.93
  5. Step 5: Solve for x
    x = 14,673.93/123.35
  6. Step 6: Final answer
    x = 118.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.