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Finding the Fourth Proportional to 127.46, 191.15 and 73.39

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Solution

The fourth proportional to 127.46, 191.15 and 73.39 is: 110.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.46 : 191.15 = 73.39 : x
  2. Step 2: Convert to fraction form
    127.46/191.15 = 73.39/x
  3. Step 3: Cross multiply
    127.46x = 191.15 × 73.39
  4. Step 4: Simplify right side
    127.46x = 14,027.65
  5. Step 5: Solve for x
    x = 14,027.65/127.46
  6. Step 6: Final answer
    x = 110.06

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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.