Finding the Fourth Proportional to 127,193,860.20, 190,790,790.30 and 45,405,090.30
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Solution
The fourth proportional to 127,193,860.20, 190,790,790.30 and 45,405,090.30 is: 68,107,635.45
Step by Step Solution
- Step 1: Write the proportion equation
127,193,860.20 : 190,790,790.30 = 45,405,090.30 : x - Step 2: Convert to fraction form
127,193,860.20/190,790,790.30 = 45,405,090.30/x - Step 3: Cross multiply
127,193,860.20x = 190,790,790.30 × 45,405,090.30 - Step 4: Simplify right side
127,193,860.20x = 8,662,873,061,979,864 - Step 5: Solve for x
x = 8,662,873,061,979,864/127,193,860.20 - Step 6: Final answer
x = 68,107,635.45
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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.