Home / 445,173.28-667,761-129,637.84

Finding the Fourth Proportional to 445,173.28, 667,761 and 129,637.84

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Solution

The fourth proportional to 445,173.28, 667,761 and 129,637.84 is: 194,457.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,173.28 : 667,761 = 129,637.84 : x
  2. Step 2: Convert to fraction form
    445,173.28/667,761 = 129,637.84/x
  3. Step 3: Cross multiply
    445,173.28x = 667,761 × 129,637.84
  4. Step 4: Simplify right side
    445,173.28x = 86,567,093,676.24
  5. Step 5: Solve for x
    x = 86,567,093,676.24/445,173.28
  6. Step 6: Final answer
    x = 194,457.07

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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.