Home / 68,128.44-102,220.74-30,157.80

Finding the Fourth Proportional to 68,128.44, 102,220.74 and 30,157.80

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Solution

The fourth proportional to 68,128.44, 102,220.74 and 30,157.80 is: 45,249.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,128.44 : 102,220.74 = 30,157.80 : x
  2. Step 2: Convert to fraction form
    68,128.44/102,220.74 = 30,157.80/x
  3. Step 3: Cross multiply
    68,128.44x = 102,220.74 × 30,157.80
  4. Step 4: Simplify right side
    68,128.44x = 3,082,752,632.77
  5. Step 5: Solve for x
    x = 3,082,752,632.77/68,128.44
  6. Step 6: Final answer
    x = 45,249.13

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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.