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Finding the Fourth Proportional to 162.26, 223.92 and 100.07

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Solution

The fourth proportional to 162.26, 223.92 and 100.07 is: 138.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.26 : 223.92 = 100.07 : x
  2. Step 2: Convert to fraction form
    162.26/223.92 = 100.07/x
  3. Step 3: Cross multiply
    162.26x = 223.92 × 100.07
  4. Step 4: Simplify right side
    162.26x = 22,406.55
  5. Step 5: Solve for x
    x = 22,406.55/162.26
  6. Step 6: Final answer
    x = 138.09

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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.