Home / 128,234.10-192,005.55-92,982.90

Finding the Fourth Proportional to 128,234.10, 192,005.55 and 92,982.90

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Solution

The fourth proportional to 128,234.10, 192,005.55 and 92,982.90 is: 139,223.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,234.10 : 192,005.55 = 92,982.90 : x
  2. Step 2: Convert to fraction form
    128,234.10/192,005.55 = 92,982.90/x
  3. Step 3: Cross multiply
    128,234.10x = 192,005.55 × 92,982.90
  4. Step 4: Simplify right side
    128,234.10x = 17,853,232,855.10
  5. Step 5: Solve for x
    x = 17,853,232,855.10/128,234.10
  6. Step 6: Final answer
    x = 139,223.75

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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.