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Finding the Fourth Proportional to 94.94, 141.74 and 89.14

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Solution

The fourth proportional to 94.94, 141.74 and 89.14 is: 133.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.94 : 141.74 = 89.14 : x
  2. Step 2: Convert to fraction form
    94.94/141.74 = 89.14/x
  3. Step 3: Cross multiply
    94.94x = 141.74 × 89.14
  4. Step 4: Simplify right side
    94.94x = 12,634.26
  5. Step 5: Solve for x
    x = 12,634.26/94.94
  6. Step 6: Final answer
    x = 133.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.