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Finding the Fourth Proportional to 158.55, 219.14 and 125.74

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Solution

The fourth proportional to 158.55, 219.14 and 125.74 is: 173.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.55 : 219.14 = 125.74 : x
  2. Step 2: Convert to fraction form
    158.55/219.14 = 125.74/x
  3. Step 3: Cross multiply
    158.55x = 219.14 × 125.74
  4. Step 4: Simplify right side
    158.55x = 27,554.66
  5. Step 5: Solve for x
    x = 27,554.66/158.55
  6. Step 6: Final answer
    x = 173.79

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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.