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Finding the Fourth Proportional to 116.83, 174.39 and 103.16

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Solution

The fourth proportional to 116.83, 174.39 and 103.16 is: 153.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.83 : 174.39 = 103.16 : x
  2. Step 2: Convert to fraction form
    116.83/174.39 = 103.16/x
  3. Step 3: Cross multiply
    116.83x = 174.39 × 103.16
  4. Step 4: Simplify right side
    116.83x = 17,990.07
  5. Step 5: Solve for x
    x = 17,990.07/116.83
  6. Step 6: Final answer
    x = 153.99

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.