Finding the Fourth Proportional to 107,738,181.50, 161,016,933.68 and 78,653,268.99
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Solution
The fourth proportional to 107,738,181.50, 161,016,933.68 and 78,653,268.99 is: 117,548,932.24
Step by Step Solution
- Step 1: Write the proportion equation
107,738,181.50 : 161,016,933.68 = 78,653,268.99 : x - Step 2: Convert to fraction form
107,738,181.50/161,016,933.68 = 78,653,268.99/x - Step 3: Cross multiply
107,738,181.50x = 161,016,933.68 × 78,653,268.99 - Step 4: Simplify right side
107,738,181.50x = 12,664,508,196,284,764 - Step 5: Solve for x
x = 12,664,508,196,284,764/107,738,181.50 - Step 6: Final answer
x = 117,548,932.24
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.