Home / 445,172.28-667,759.50-129,636.84

Finding the Fourth Proportional to 445,172.28, 667,759.50 and 129,636.84

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Solution

The fourth proportional to 445,172.28, 667,759.50 and 129,636.84 is: 194,455.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,172.28 : 667,759.50 = 129,636.84 : x
  2. Step 2: Convert to fraction form
    445,172.28/667,759.50 = 129,636.84/x
  3. Step 3: Cross multiply
    445,172.28x = 667,759.50 × 129,636.84
  4. Step 4: Simplify right side
    445,172.28x = 86,566,231,459.98
  5. Step 5: Solve for x
    x = 86,566,231,459.98/445,172.28
  6. Step 6: Final answer
    x = 194,455.57

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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.