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Finding the Fourth Proportional to 136.10, 203.19 and 123.35

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Solution

The fourth proportional to 136.10, 203.19 and 123.35 is: 184.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.10 : 203.19 = 123.35 : x
  2. Step 2: Convert to fraction form
    136.10/203.19 = 123.35/x
  3. Step 3: Cross multiply
    136.10x = 203.19 × 123.35
  4. Step 4: Simplify right side
    136.10x = 25,062.47
  5. Step 5: Solve for x
    x = 25,062.47/136.10
  6. Step 6: Final answer
    x = 184.15

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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.