Home / 100,456.21-150,707.33-43,539.67

Finding the Fourth Proportional to 100,456.21, 150,707.33 and 43,539.67

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Solution

The fourth proportional to 100,456.21, 150,707.33 and 43,539.67 is: 65,319.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,456.21 : 150,707.33 = 43,539.67 : x
  2. Step 2: Convert to fraction form
    100,456.21/150,707.33 = 43,539.67/x
  3. Step 3: Cross multiply
    100,456.21x = 150,707.33 × 43,539.67
  4. Step 4: Simplify right side
    100,456.21x = 6,561,747,146.86
  5. Step 5: Solve for x
    x = 6,561,747,146.86/100,456.21
  6. Step 6: Final answer
    x = 65,319.48

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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.