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Finding the Fourth Proportional to 127.35, 188.63 and 125.99

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Solution

The fourth proportional to 127.35, 188.63 and 125.99 is: 186.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.35 : 188.63 = 125.99 : x
  2. Step 2: Convert to fraction form
    127.35/188.63 = 125.99/x
  3. Step 3: Cross multiply
    127.35x = 188.63 × 125.99
  4. Step 4: Simplify right side
    127.35x = 23,763.92
  5. Step 5: Solve for x
    x = 23,763.92/127.35
  6. Step 6: Final answer
    x = 186.60

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.