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Finding the Fourth Proportional to 122.16, 183 and 93.32

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Solution

The fourth proportional to 122.16, 183 and 93.32 is: 139.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.16 : 183 = 93.32 : x
  2. Step 2: Convert to fraction form
    122.16/183 = 93.32/x
  3. Step 3: Cross multiply
    122.16x = 183 × 93.32
  4. Step 4: Simplify right side
    122.16x = 17,077.56
  5. Step 5: Solve for x
    x = 17,077.56/122.16
  6. Step 6: Final answer
    x = 139.80

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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.