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Finding the Fourth Proportional to 100,639.89, 150,825.89 and 53,244.88

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Solution

The fourth proportional to 100,639.89, 150,825.89 and 53,244.88 is: 79,796.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,639.89 : 150,825.89 = 53,244.88 : x
  2. Step 2: Convert to fraction form
    100,639.89/150,825.89 = 53,244.88/x
  3. Step 3: Cross multiply
    100,639.89x = 150,825.89 × 53,244.88
  4. Step 4: Simplify right side
    100,639.89x = 8,030,706,169.99
  5. Step 5: Solve for x
    x = 8,030,706,169.99/100,639.89
  6. Step 6: Final answer
    x = 79,796.45

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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.