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Finding the Fourth Proportional to 125.63, 188.41 and 79.33

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Solution

The fourth proportional to 125.63, 188.41 and 79.33 is: 118.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.63 : 188.41 = 79.33 : x
  2. Step 2: Convert to fraction form
    125.63/188.41 = 79.33/x
  3. Step 3: Cross multiply
    125.63x = 188.41 × 79.33
  4. Step 4: Simplify right side
    125.63x = 14,946.57
  5. Step 5: Solve for x
    x = 14,946.57/125.63
  6. Step 6: Final answer
    x = 118.97

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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.