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Finding the Fourth Proportional to 111.01, 165.48 and 104.93

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Solution

The fourth proportional to 111.01, 165.48 and 104.93 is: 156.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    111.01 : 165.48 = 104.93 : x
  2. Step 2: Convert to fraction form
    111.01/165.48 = 104.93/x
  3. Step 3: Cross multiply
    111.01x = 165.48 × 104.93
  4. Step 4: Simplify right side
    111.01x = 17,364.08
  5. Step 5: Solve for x
    x = 17,364.08/111.01
  6. Step 6: Final answer
    x = 156.42

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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.