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Finding the Fourth Proportional to 116.77, 161.52 and 109.97

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Solution

The fourth proportional to 116.77, 161.52 and 109.97 is: 152.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.77 : 161.52 = 109.97 : x
  2. Step 2: Convert to fraction form
    116.77/161.52 = 109.97/x
  3. Step 3: Cross multiply
    116.77x = 161.52 × 109.97
  4. Step 4: Simplify right side
    116.77x = 17,762.35
  5. Step 5: Solve for x
    x = 17,762.35/116.77
  6. Step 6: Final answer
    x = 152.11

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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.