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Finding the Fourth Proportional to 123.10, 183.86 and 106.04

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Solution

The fourth proportional to 123.10, 183.86 and 106.04 is: 158.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    123.10 : 183.86 = 106.04 : x
  2. Step 2: Convert to fraction form
    123.10/183.86 = 106.04/x
  3. Step 3: Cross multiply
    123.10x = 183.86 × 106.04
  4. Step 4: Simplify right side
    123.10x = 19,496.51
  5. Step 5: Solve for x
    x = 19,496.51/123.10
  6. Step 6: Final answer
    x = 158.38

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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.