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Finding the Fourth Proportional to 127.43, 190.99 and 58.86

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Solution

The fourth proportional to 127.43, 190.99 and 58.86 is: 88.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.43 : 190.99 = 58.86 : x
  2. Step 2: Convert to fraction form
    127.43/190.99 = 58.86/x
  3. Step 3: Cross multiply
    127.43x = 190.99 × 58.86
  4. Step 4: Simplify right side
    127.43x = 11,240.42
  5. Step 5: Solve for x
    x = 11,240.42/127.43
  6. Step 6: Final answer
    x = 88.21

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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.