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Finding the Fourth Proportional to 186.03, 278.78 and 125.19

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Solution

The fourth proportional to 186.03, 278.78 and 125.19 is: 187.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.03 : 278.78 = 125.19 : x
  2. Step 2: Convert to fraction form
    186.03/278.78 = 125.19/x
  3. Step 3: Cross multiply
    186.03x = 278.78 × 125.19
  4. Step 4: Simplify right side
    186.03x = 34,899.84
  5. Step 5: Solve for x
    x = 34,899.84/186.03
  6. Step 6: Final answer
    x = 187.60

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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.