Home / 131,989.34-198,028.02-87,790.34

Finding the Fourth Proportional to 131,989.34, 198,028.02 and 87,790.34

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Solution

The fourth proportional to 131,989.34, 198,028.02 and 87,790.34 is: 131,714.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,989.34 : 198,028.02 = 87,790.34 : x
  2. Step 2: Convert to fraction form
    131,989.34/198,028.02 = 87,790.34/x
  3. Step 3: Cross multiply
    131,989.34x = 198,028.02 × 87,790.34
  4. Step 4: Simplify right side
    131,989.34x = 17,384,947,205.33
  5. Step 5: Solve for x
    x = 17,384,947,205.33/131,989.34
  6. Step 6: Final answer
    x = 131,714.78

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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.