Finding the Fourth Proportional to 138,669,664,249.48, 207,938,926,319.72 and 53,719,247,221.68
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Solution
The fourth proportional to 138,669,664,249.48, 207,938,926,319.72 and 53,719,247,221.68 is: 80,553,469,646.28
Step by Step Solution
- Step 1: Write the proportion equation
138,669,664,249.48 : 207,938,926,319.72 = 53,719,247,221.68 : x - Step 2: Convert to fraction form
138,669,664,249.48/207,938,926,319.72 = 53,719,247,221.68/x - Step 3: Cross multiply
138,669,664,249.48x = 207,938,926,319.72 × 53,719,247,221.68 - Step 4: Simplify right side
138,669,664,249.48x = 11,170,322,589,979,741,519,872 - Step 5: Solve for x
x = 11,170,322,589,979,741,519,872/138,669,664,249.48 - Step 6: Final answer
x = 80,553,469,646.28
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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.