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Finding the Fourth Proportional to 127.07, 174.90 and 118.36

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Solution

The fourth proportional to 127.07, 174.90 and 118.36 is: 162.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.07 : 174.90 = 118.36 : x
  2. Step 2: Convert to fraction form
    127.07/174.90 = 118.36/x
  3. Step 3: Cross multiply
    127.07x = 174.90 × 118.36
  4. Step 4: Simplify right side
    127.07x = 20,701.16
  5. Step 5: Solve for x
    x = 20,701.16/127.07
  6. Step 6: Final answer
    x = 162.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.