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Finding the Fourth Proportional to 142.98, 197.25 and 93.24

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Solution

The fourth proportional to 142.98, 197.25 and 93.24 is: 128.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    142.98 : 197.25 = 93.24 : x
  2. Step 2: Convert to fraction form
    142.98/197.25 = 93.24/x
  3. Step 3: Cross multiply
    142.98x = 197.25 × 93.24
  4. Step 4: Simplify right side
    142.98x = 18,392.17
  5. Step 5: Solve for x
    x = 18,392.17/142.98
  6. Step 6: Final answer
    x = 128.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.