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Finding the Fourth Proportional to 116.07, 174.27 and 90.43

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Solution

The fourth proportional to 116.07, 174.27 and 90.43 is: 135.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.07 : 174.27 = 90.43 : x
  2. Step 2: Convert to fraction form
    116.07/174.27 = 90.43/x
  3. Step 3: Cross multiply
    116.07x = 174.27 × 90.43
  4. Step 4: Simplify right side
    116.07x = 15,759.24
  5. Step 5: Solve for x
    x = 15,759.24/116.07
  6. Step 6: Final answer
    x = 135.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.