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Finding the Fourth Proportional to 148.80, 205.29 and 93.54

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Solution

The fourth proportional to 148.80, 205.29 and 93.54 is: 129.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.80 : 205.29 = 93.54 : x
  2. Step 2: Convert to fraction form
    148.80/205.29 = 93.54/x
  3. Step 3: Cross multiply
    148.80x = 205.29 × 93.54
  4. Step 4: Simplify right side
    148.80x = 19,202.83
  5. Step 5: Solve for x
    x = 19,202.83/148.80
  6. Step 6: Final answer
    x = 129.05

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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.