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Finding the Fourth Proportional to 140.88, 210.30 and 130.88

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Solution

The fourth proportional to 140.88, 210.30 and 130.88 is: 195.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.88 : 210.30 = 130.88 : x
  2. Step 2: Convert to fraction form
    140.88/210.30 = 130.88/x
  3. Step 3: Cross multiply
    140.88x = 210.30 × 130.88
  4. Step 4: Simplify right side
    140.88x = 27,524.06
  5. Step 5: Solve for x
    x = 27,524.06/140.88
  6. Step 6: Final answer
    x = 195.37

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