Home / 100,512.28-150,784.62-30,385.72

Finding the Fourth Proportional to 100,512.28, 150,784.62 and 30,385.72

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Solution

The fourth proportional to 100,512.28, 150,784.62 and 30,385.72 is: 45,583.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,512.28 : 150,784.62 = 30,385.72 : x
  2. Step 2: Convert to fraction form
    100,512.28/150,784.62 = 30,385.72/x
  3. Step 3: Cross multiply
    100,512.28x = 150,784.62 × 30,385.72
  4. Step 4: Simplify right side
    100,512.28x = 4,581,699,243.63
  5. Step 5: Solve for x
    x = 4,581,699,243.63/100,512.28
  6. Step 6: Final answer
    x = 45,583.48

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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.