Home / 128,369.12-192,512.70-44,108.96

Finding the Fourth Proportional to 128,369.12, 192,512.70 and 44,108.96

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Solution

The fourth proportional to 128,369.12, 192,512.70 and 44,108.96 is: 66,149.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,369.12 : 192,512.70 = 44,108.96 : x
  2. Step 2: Convert to fraction form
    128,369.12/192,512.70 = 44,108.96/x
  3. Step 3: Cross multiply
    128,369.12x = 192,512.70 × 44,108.96
  4. Step 4: Simplify right side
    128,369.12x = 8,491,534,983.79
  5. Step 5: Solve for x
    x = 8,491,534,983.79/128,369.12
  6. Step 6: Final answer
    x = 66,149.36

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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.