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Finding the Fourth Proportional to 147.39, 203.19 and 118.23

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Solution

The fourth proportional to 147.39, 203.19 and 118.23 is: 162.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.39 : 203.19 = 118.23 : x
  2. Step 2: Convert to fraction form
    147.39/203.19 = 118.23/x
  3. Step 3: Cross multiply
    147.39x = 203.19 × 118.23
  4. Step 4: Simplify right side
    147.39x = 24,023.15
  5. Step 5: Solve for x
    x = 24,023.15/147.39
  6. Step 6: Final answer
    x = 162.99

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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.