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Finding the Fourth Proportional to 127.02, 174.88 and 112.05

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Solution

The fourth proportional to 127.02, 174.88 and 112.05 is: 154.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.02 : 174.88 = 112.05 : x
  2. Step 2: Convert to fraction form
    127.02/174.88 = 112.05/x
  3. Step 3: Cross multiply
    127.02x = 174.88 × 112.05
  4. Step 4: Simplify right side
    127.02x = 19,595.02
  5. Step 5: Solve for x
    x = 19,595.02/127.02
  6. Step 6: Final answer
    x = 154.27

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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.