Home / 172,380.12-237,883.88-100,745.72

Finding the Fourth Proportional to 172,380.12, 237,883.88 and 100,745.72

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Solution

The fourth proportional to 172,380.12, 237,883.88 and 100,745.72 is: 139,028.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,380.12 : 237,883.88 = 100,745.72 : x
  2. Step 2: Convert to fraction form
    172,380.12/237,883.88 = 100,745.72/x
  3. Step 3: Cross multiply
    172,380.12x = 237,883.88 × 100,745.72
  4. Step 4: Simplify right side
    172,380.12x = 23,965,782,766.99
  5. Step 5: Solve for x
    x = 23,965,782,766.99/172,380.12
  6. Step 6: Final answer
    x = 139,028.69

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1.5x scale

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.