Home / 100,668.28-150,936-56,299.72

Finding the Fourth Proportional to 100,668.28, 150,936 and 56,299.72

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Solution

The fourth proportional to 100,668.28, 150,936 and 56,299.72 is: 84,412.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,668.28 : 150,936 = 56,299.72 : x
  2. Step 2: Convert to fraction form
    100,668.28/150,936 = 56,299.72/x
  3. Step 3: Cross multiply
    100,668.28x = 150,936 × 56,299.72
  4. Step 4: Simplify right side
    100,668.28x = 8,497,654,537.92
  5. Step 5: Solve for x
    x = 8,497,654,537.92/100,668.28
  6. Step 6: Final answer
    x = 84,412.43

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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.