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Finding the Fourth Proportional to 109.56, 150.91 and 94.07

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Solution

The fourth proportional to 109.56, 150.91 and 94.07 is: 129.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    109.56 : 150.91 = 94.07 : x
  2. Step 2: Convert to fraction form
    109.56/150.91 = 94.07/x
  3. Step 3: Cross multiply
    109.56x = 150.91 × 94.07
  4. Step 4: Simplify right side
    109.56x = 14,195.93
  5. Step 5: Solve for x
    x = 14,195.93/109.56
  6. Step 6: Final answer
    x = 129.57

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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.