Home / 128,132.66-192,179.30-42,745.04

Finding the Fourth Proportional to 128,132.66, 192,179.30 and 42,745.04

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Solution

The fourth proportional to 128,132.66, 192,179.30 and 42,745.04 is: 64,110.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,132.66 : 192,179.30 = 42,745.04 : x
  2. Step 2: Convert to fraction form
    128,132.66/192,179.30 = 42,745.04/x
  3. Step 3: Cross multiply
    128,132.66x = 192,179.30 × 42,745.04
  4. Step 4: Simplify right side
    128,132.66x = 8,214,711,865.67
  5. Step 5: Solve for x
    x = 8,214,711,865.67/128,132.66
  6. Step 6: Final answer
    x = 64,110.99

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1.5x scale

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.