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Finding the Fourth Proportional to 125.37, 187.90 and 67.62

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Solution

The fourth proportional to 125.37, 187.90 and 67.62 is: 101.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.37 : 187.90 = 67.62 : x
  2. Step 2: Convert to fraction form
    125.37/187.90 = 67.62/x
  3. Step 3: Cross multiply
    125.37x = 187.90 × 67.62
  4. Step 4: Simplify right side
    125.37x = 12,705.63
  5. Step 5: Solve for x
    x = 12,705.63/125.37
  6. Step 6: Final answer
    x = 101.35

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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.