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Finding the Fourth Proportional to 140.40, 210.36 and 97.56

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Solution

The fourth proportional to 140.40, 210.36 and 97.56 is: 146.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.40 : 210.36 = 97.56 : x
  2. Step 2: Convert to fraction form
    140.40/210.36 = 97.56/x
  3. Step 3: Cross multiply
    140.40x = 210.36 × 97.56
  4. Step 4: Simplify right side
    140.40x = 20,522.72
  5. Step 5: Solve for x
    x = 20,522.72/140.40
  6. Step 6: Final answer
    x = 146.17

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