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Finding the Fourth Proportional to 197,562.56, 272,642.72 and 108,138.56

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Solution

The fourth proportional to 197,562.56, 272,642.72 and 108,138.56 is: 149,234.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,562.56 : 272,642.72 = 108,138.56 : x
  2. Step 2: Convert to fraction form
    197,562.56/272,642.72 = 108,138.56/x
  3. Step 3: Cross multiply
    197,562.56x = 272,642.72 × 108,138.56
  4. Step 4: Simplify right side
    197,562.56x = 29,483,191,135.28
  5. Step 5: Solve for x
    x = 29,483,191,135.28/197,562.56
  6. Step 6: Final answer
    x = 149,234.71

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1.5x scale

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.