Home / 132,874.20-183,369.85-81,920.59

Finding the Fourth Proportional to 132,874.20, 183,369.85 and 81,920.59

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Solution

The fourth proportional to 132,874.20, 183,369.85 and 81,920.59 is: 113,052.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,874.20 : 183,369.85 = 81,920.59 : x
  2. Step 2: Convert to fraction form
    132,874.20/183,369.85 = 81,920.59/x
  3. Step 3: Cross multiply
    132,874.20x = 183,369.85 × 81,920.59
  4. Step 4: Simplify right side
    132,874.20x = 15,021,765,636.99
  5. Step 5: Solve for x
    x = 15,021,765,636.99/132,874.20
  6. Step 6: Final answer
    x = 113,052.54

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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.