Finding the Fourth Proportional to 126,197,129.80, 189,165,057.90 and 68,567,638.60
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Solution
The fourth proportional to 126,197,129.80, 189,165,057.90 and 68,567,638.60 is: 102,780,478.02
Step by Step Solution
- Step 1: Write the proportion equation
126,197,129.80 : 189,165,057.90 = 68,567,638.60 : x - Step 2: Convert to fraction form
126,197,129.80/189,165,057.90 = 68,567,638.60/x - Step 3: Cross multiply
126,197,129.80x = 189,165,057.90 × 68,567,638.60 - Step 4: Simplify right side
126,197,129.80x = 12,970,601,325,835,274 - Step 5: Solve for x
x = 12,970,601,325,835,274/126,197,129.80 - Step 6: Final answer
x = 102,780,478.02
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.