Finding the Fourth Proportional to 137,286.16, 189,357.21 and 125,992.14
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Solution
The fourth proportional to 137,286.16, 189,357.21 and 125,992.14 is: 173,779.50
Step by Step Solution
- Step 1: Write the proportion equation
137,286.16 : 189,357.21 = 125,992.14 : x - Step 2: Convert to fraction form
137,286.16/189,357.21 = 125,992.14/x - Step 3: Cross multiply
137,286.16x = 189,357.21 × 125,992.14 - Step 4: Simplify right side
137,286.16x = 23,857,520,112.33 - Step 5: Solve for x
x = 23,857,520,112.33/137,286.16 - Step 6: Final answer
x = 173,779.50
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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.