Home / 128,082.21-192,132.53-49,196.44

Finding the Fourth Proportional to 128,082.21, 192,132.53 and 49,196.44

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Solution

The fourth proportional to 128,082.21, 192,132.53 and 49,196.44 is: 73,798.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,082.21 : 192,132.53 = 49,196.44 : x
  2. Step 2: Convert to fraction form
    128,082.21/192,132.53 = 49,196.44/x
  3. Step 3: Cross multiply
    128,082.21x = 192,132.53 × 49,196.44
  4. Step 4: Simplify right side
    128,082.21x = 9,452,236,260.86
  5. Step 5: Solve for x
    x = 9,452,236,260.86/128,082.21
  6. Step 6: Final answer
    x = 73,798.20

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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.