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Finding the Fourth Proportional to 100,606.78, 150,924.66 and 30,491.56

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Solution

The fourth proportional to 100,606.78, 150,924.66 and 30,491.56 is: 45,741.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,606.78 : 150,924.66 = 30,491.56 : x
  2. Step 2: Convert to fraction form
    100,606.78/150,924.66 = 30,491.56/x
  3. Step 3: Cross multiply
    100,606.78x = 150,924.66 × 30,491.56
  4. Step 4: Simplify right side
    100,606.78x = 4,601,928,325.87
  5. Step 5: Solve for x
    x = 4,601,928,325.87/100,606.78
  6. Step 6: Final answer
    x = 45,741.73

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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.