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Finding the Fourth Proportional to 143.02, 195.93 and 137.55

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Solution

The fourth proportional to 143.02, 195.93 and 137.55 is: 188.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    143.02 : 195.93 = 137.55 : x
  2. Step 2: Convert to fraction form
    143.02/195.93 = 137.55/x
  3. Step 3: Cross multiply
    143.02x = 195.93 × 137.55
  4. Step 4: Simplify right side
    143.02x = 26,950.17
  5. Step 5: Solve for x
    x = 26,950.17/143.02
  6. Step 6: Final answer
    x = 188.44

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.