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Finding the Fourth Proportional to 100,399.93, 150,645.86 and 43,491.23

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Solution

The fourth proportional to 100,399.93, 150,645.86 and 43,491.23 is: 65,256.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,399.93 : 150,645.86 = 43,491.23 : x
  2. Step 2: Convert to fraction form
    100,399.93/150,645.86 = 43,491.23/x
  3. Step 3: Cross multiply
    100,399.93x = 150,645.86 × 43,491.23
  4. Step 4: Simplify right side
    100,399.93x = 6,551,774,122.42
  5. Step 5: Solve for x
    x = 6,551,774,122.42/100,399.93
  6. Step 6: Final answer
    x = 65,256.76

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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.