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Finding the Fourth Proportional to 162.02, 223.62 and 103.70

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Solution

The fourth proportional to 162.02, 223.62 and 103.70 is: 143.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.02 : 223.62 = 103.70 : x
  2. Step 2: Convert to fraction form
    162.02/223.62 = 103.70/x
  3. Step 3: Cross multiply
    162.02x = 223.62 × 103.70
  4. Step 4: Simplify right side
    162.02x = 23,189.39
  5. Step 5: Solve for x
    x = 23,189.39/162.02
  6. Step 6: Final answer
    x = 143.13

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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.