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Finding the Fourth Proportional to 131.55, 196.84 and 93.07

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Solution

The fourth proportional to 131.55, 196.84 and 93.07 is: 139.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.55 : 196.84 = 93.07 : x
  2. Step 2: Convert to fraction form
    131.55/196.84 = 93.07/x
  3. Step 3: Cross multiply
    131.55x = 196.84 × 93.07
  4. Step 4: Simplify right side
    131.55x = 18,319.90
  5. Step 5: Solve for x
    x = 18,319.90/131.55
  6. Step 6: Final answer
    x = 139.26

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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.