Finding the Fourth Proportional to 138,293,812.80, 207,451,216.80 and 41,241,945.60
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Solution
The fourth proportional to 138,293,812.80, 207,451,216.80 and 41,241,945.60 is: 61,866,048.99
Step by Step Solution
- Step 1: Write the proportion equation
138,293,812.80 : 207,451,216.80 = 41,241,945.60 : x - Step 2: Convert to fraction form
138,293,812.80/207,451,216.80 = 41,241,945.60/x - Step 3: Cross multiply
138,293,812.80x = 207,451,216.80 × 41,241,945.60 - Step 4: Simplify right side
138,293,812.80x = 8,555,691,797,919,407 - Step 5: Solve for x
x = 8,555,691,797,919,407/138,293,812.80 - Step 6: Final answer
x = 61,866,048.99
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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.