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Finding the Fourth Proportional to 94.23, 140.94 and 70.20

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Solution

The fourth proportional to 94.23, 140.94 and 70.20 is: 105.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.23 : 140.94 = 70.20 : x
  2. Step 2: Convert to fraction form
    94.23/140.94 = 70.20/x
  3. Step 3: Cross multiply
    94.23x = 140.94 × 70.20
  4. Step 4: Simplify right side
    94.23x = 9,893.99
  5. Step 5: Solve for x
    x = 9,893.99/94.23
  6. Step 6: Final answer
    x = 105.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.