Home / 128,091.06-192,118.32-80,561.16

Finding the Fourth Proportional to 128,091.06, 192,118.32 and 80,561.16

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Solution

The fourth proportional to 128,091.06, 192,118.32 and 80,561.16 is: 120,830.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,091.06 : 192,118.32 = 80,561.16 : x
  2. Step 2: Convert to fraction form
    128,091.06/192,118.32 = 80,561.16/x
  3. Step 3: Cross multiply
    128,091.06x = 192,118.32 × 80,561.16
  4. Step 4: Simplify right side
    128,091.06x = 15,477,274,716.45
  5. Step 5: Solve for x
    x = 15,477,274,716.45/128,091.06
  6. Step 6: Final answer
    x = 120,830.25

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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.