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Finding the Fourth Proportional to 136.30, 187.90 and 110.07

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Solution

The fourth proportional to 136.30, 187.90 and 110.07 is: 151.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.30 : 187.90 = 110.07 : x
  2. Step 2: Convert to fraction form
    136.30/187.90 = 110.07/x
  3. Step 3: Cross multiply
    136.30x = 187.90 × 110.07
  4. Step 4: Simplify right side
    136.30x = 20,681.17
  5. Step 5: Solve for x
    x = 20,681.17/136.30
  6. Step 6: Final answer
    x = 151.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.