Home / 199,929.33-299,977.36-87,690.20

Finding the Fourth Proportional to 199,929.33, 299,977.36 and 87,690.20

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Solution

The fourth proportional to 199,929.33, 299,977.36 and 87,690.20 is: 131,571.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,929.33 : 299,977.36 = 87,690.20 : x
  2. Step 2: Convert to fraction form
    199,929.33/299,977.36 = 87,690.20/x
  3. Step 3: Cross multiply
    199,929.33x = 299,977.36 × 87,690.20
  4. Step 4: Simplify right side
    199,929.33x = 26,305,072,974.76
  5. Step 5: Solve for x
    x = 26,305,072,974.76/199,929.33
  6. Step 6: Final answer
    x = 131,571.86

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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.