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Finding the Fourth Proportional to 140.30, 210.51 and 110.12

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Solution

The fourth proportional to 140.30, 210.51 and 110.12 is: 165.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.30 : 210.51 = 110.12 : x
  2. Step 2: Convert to fraction form
    140.30/210.51 = 110.12/x
  3. Step 3: Cross multiply
    140.30x = 210.51 × 110.12
  4. Step 4: Simplify right side
    140.30x = 23,181.36
  5. Step 5: Solve for x
    x = 23,181.36/140.30
  6. Step 6: Final answer
    x = 165.23

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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.