Finding the Fourth Proportional to 136,403.40, 188,246.16 and 82,690.68
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Solution
The fourth proportional to 136,403.40, 188,246.16 and 82,690.68 is: 114,118.88
Step by Step Solution
- Step 1: Write the proportion equation
136,403.40 : 188,246.16 = 82,690.68 : x - Step 2: Convert to fraction form
136,403.40/188,246.16 = 82,690.68/x - Step 3: Cross multiply
136,403.40x = 188,246.16 × 82,690.68 - Step 4: Simplify right side
136,403.40x = 15,566,202,977.79 - Step 5: Solve for x
x = 15,566,202,977.79/136,403.40 - Step 6: Final answer
x = 114,118.88
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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.