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Finding the Fourth Proportional to 178,791.75, 268,183.47 and 90,021.42

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Solution

The fourth proportional to 178,791.75, 268,183.47 and 90,021.42 is: 135,030.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,791.75 : 268,183.47 = 90,021.42 : x
  2. Step 2: Convert to fraction form
    178,791.75/268,183.47 = 90,021.42/x
  3. Step 3: Cross multiply
    178,791.75x = 268,183.47 × 90,021.42
  4. Step 4: Simplify right side
    178,791.75x = 24,142,256,789.93
  5. Step 5: Solve for x
    x = 24,142,256,789.93/178,791.75
  6. Step 6: Final answer
    x = 135,030.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.