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Finding the Fourth Proportional to 130.09, 179.31 and 126.67

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Solution

The fourth proportional to 130.09, 179.31 and 126.67 is: 174.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.09 : 179.31 = 126.67 : x
  2. Step 2: Convert to fraction form
    130.09/179.31 = 126.67/x
  3. Step 3: Cross multiply
    130.09x = 179.31 × 126.67
  4. Step 4: Simplify right side
    130.09x = 22,713.20
  5. Step 5: Solve for x
    x = 22,713.20/130.09
  6. Step 6: Final answer
    x = 174.60

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.