Home / 134,138.10-200,915.55-81,455.70

Finding the Fourth Proportional to 134,138.10, 200,915.55 and 81,455.70

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Solution

The fourth proportional to 134,138.10, 200,915.55 and 81,455.70 is: 122,006.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,138.10 : 200,915.55 = 81,455.70 : x
  2. Step 2: Convert to fraction form
    134,138.10/200,915.55 = 81,455.70/x
  3. Step 3: Cross multiply
    134,138.10x = 200,915.55 × 81,455.70
  4. Step 4: Simplify right side
    134,138.10x = 16,365,716,766.14
  5. Step 5: Solve for x
    x = 16,365,716,766.14/134,138.10
  6. Step 6: Final answer
    x = 122,006.48

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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.