Finding the Fourth Proportional to 137,172,198.96, 189,454,741.65 and 90,338,629.14
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Solution
The fourth proportional to 137,172,198.96, 189,454,741.65 and 90,338,629.14 is: 124,770,775.53
Step by Step Solution
- Step 1: Write the proportion equation
137,172,198.96 : 189,454,741.65 = 90,338,629.14 : x - Step 2: Convert to fraction form
137,172,198.96/189,454,741.65 = 90,338,629.14/x - Step 3: Cross multiply
137,172,198.96x = 189,454,741.65 × 90,338,629.14 - Step 4: Simplify right side
137,172,198.96x = 17,115,081,644,733,862 - Step 5: Solve for x
x = 17,115,081,644,733,862/137,172,198.96 - Step 6: Final answer
x = 124,770,775.53
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.