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Finding the Fourth Proportional to 140.68, 210.07 and 126.26

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Solution

The fourth proportional to 140.68, 210.07 and 126.26 is: 188.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.68 : 210.07 = 126.26 : x
  2. Step 2: Convert to fraction form
    140.68/210.07 = 126.26/x
  3. Step 3: Cross multiply
    140.68x = 210.07 × 126.26
  4. Step 4: Simplify right side
    140.68x = 26,522.39
  5. Step 5: Solve for x
    x = 26,522.39/140.68
  6. Step 6: Final answer
    x = 188.53

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Why These Related Problems?

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