Home / 152,119.89-209,904.21-87,579.09

Finding the Fourth Proportional to 152,119.89, 209,904.21 and 87,579.09

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Solution

The fourth proportional to 152,119.89, 209,904.21 and 87,579.09 is: 120,846.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,119.89 : 209,904.21 = 87,579.09 : x
  2. Step 2: Convert to fraction form
    152,119.89/209,904.21 = 87,579.09/x
  3. Step 3: Cross multiply
    152,119.89x = 209,904.21 × 87,579.09
  4. Step 4: Simplify right side
    152,119.89x = 18,383,219,698.97
  5. Step 5: Solve for x
    x = 18,383,219,698.97/152,119.89
  6. Step 6: Final answer
    x = 120,846.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.