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Finding the Fourth Proportional to 127.08, 174.78 and 116.04

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Solution

The fourth proportional to 127.08, 174.78 and 116.04 is: 159.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127.08 : 174.78 = 116.04 : x
  2. Step 2: Convert to fraction form
    127.08/174.78 = 116.04/x
  3. Step 3: Cross multiply
    127.08x = 174.78 × 116.04
  4. Step 4: Simplify right side
    127.08x = 20,281.47
  5. Step 5: Solve for x
    x = 20,281.47/127.08
  6. Step 6: Final answer
    x = 159.60

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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.