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Finding the Fourth Proportional to 126.02, 188.62 and 89.33

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Solution

The fourth proportional to 126.02, 188.62 and 89.33 is: 133.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.02 : 188.62 = 89.33 : x
  2. Step 2: Convert to fraction form
    126.02/188.62 = 89.33/x
  3. Step 3: Cross multiply
    126.02x = 188.62 × 89.33
  4. Step 4: Simplify right side
    126.02x = 16,848.26
  5. Step 5: Solve for x
    x = 16,848.26/126.02
  6. Step 6: Final answer
    x = 133.69

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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.