Home / 132,986.52-199,381.20-80,383.68

Finding the Fourth Proportional to 132,986.52, 199,381.20 and 80,383.68

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Solution

The fourth proportional to 132,986.52, 199,381.20 and 80,383.68 is: 120,515.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,986.52 : 199,381.20 = 80,383.68 : x
  2. Step 2: Convert to fraction form
    132,986.52/199,381.20 = 80,383.68/x
  3. Step 3: Cross multiply
    132,986.52x = 199,381.20 × 80,383.68
  4. Step 4: Simplify right side
    132,986.52x = 16,026,994,578.82
  5. Step 5: Solve for x
    x = 16,026,994,578.82/132,986.52
  6. Step 6: Final answer
    x = 120,515.93

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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.