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Finding the Fourth Proportional to 105.04, 145.02 and 94.11

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Solution

The fourth proportional to 105.04, 145.02 and 94.11 is: 129.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    105.04 : 145.02 = 94.11 : x
  2. Step 2: Convert to fraction form
    105.04/145.02 = 94.11/x
  3. Step 3: Cross multiply
    105.04x = 145.02 × 94.11
  4. Step 4: Simplify right side
    105.04x = 13,647.64
  5. Step 5: Solve for x
    x = 13,647.64/105.04
  6. Step 6: Final answer
    x = 129.93

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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.