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Finding the Fourth Proportional to 137.10, 189.14 and 95.70

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Solution

The fourth proportional to 137.10, 189.14 and 95.70 is: 132.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    137.10 : 189.14 = 95.70 : x
  2. Step 2: Convert to fraction form
    137.10/189.14 = 95.70/x
  3. Step 3: Cross multiply
    137.10x = 189.14 × 95.70
  4. Step 4: Simplify right side
    137.10x = 18,100.70
  5. Step 5: Solve for x
    x = 18,100.70/137.10
  6. Step 6: Final answer
    x = 132.03

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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.