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Finding the Fourth Proportional to 116.22, 160.34 and 72.54

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Solution

The fourth proportional to 116.22, 160.34 and 72.54 is: 100.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.22 : 160.34 = 72.54 : x
  2. Step 2: Convert to fraction form
    116.22/160.34 = 72.54/x
  3. Step 3: Cross multiply
    116.22x = 160.34 × 72.54
  4. Step 4: Simplify right side
    116.22x = 11,631.06
  5. Step 5: Solve for x
    x = 11,631.06/116.22
  6. Step 6: Final answer
    x = 100.08

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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.