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Finding the Fourth Proportional to 124.05, 186.08 and 103.70

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Solution

The fourth proportional to 124.05, 186.08 and 103.70 is: 155.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.05 : 186.08 = 103.70 : x
  2. Step 2: Convert to fraction form
    124.05/186.08 = 103.70/x
  3. Step 3: Cross multiply
    124.05x = 186.08 × 103.70
  4. Step 4: Simplify right side
    124.05x = 19,296.50
  5. Step 5: Solve for x
    x = 19,296.50/124.05
  6. Step 6: Final answer
    x = 155.55

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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.