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Finding the Fourth Proportional to 143.06, 197.62 and 101.60

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Solution

The fourth proportional to 143.06, 197.62 and 101.60 is: 140.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    143.06 : 197.62 = 101.60 : x
  2. Step 2: Convert to fraction form
    143.06/197.62 = 101.60/x
  3. Step 3: Cross multiply
    143.06x = 197.62 × 101.60
  4. Step 4: Simplify right side
    143.06x = 20,078.19
  5. Step 5: Solve for x
    x = 20,078.19/143.06
  6. Step 6: Final answer
    x = 140.35

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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.