Finding the Fourth Proportional to 128,406.78, 192,560.56 and 44,150.99
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Solution
The fourth proportional to 128,406.78, 192,560.56 and 44,150.99 is: 66,209.42
Step by Step Solution
- Step 1: Write the proportion equation
128,406.78 : 192,560.56 = 44,150.99 : x - Step 2: Convert to fraction form
128,406.78/192,560.56 = 44,150.99/x - Step 3: Cross multiply
128,406.78x = 192,560.56 × 44,150.99 - Step 4: Simplify right side
128,406.78x = 8,501,738,285.77 - Step 5: Solve for x
x = 8,501,738,285.77/128,406.78 - Step 6: Final answer
x = 66,209.42
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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.