Finding the Fourth Proportional to 209,193.81, 288,689.72 and 113,700.53
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Solution
The fourth proportional to 209,193.81, 288,689.72 and 113,700.53 is: 156,907.95
Step by Step Solution
- Step 1: Write the proportion equation
209,193.81 : 288,689.72 = 113,700.53 : x - Step 2: Convert to fraction form
209,193.81/288,689.72 = 113,700.53/x - Step 3: Cross multiply
209,193.81x = 288,689.72 × 113,700.53 - Step 4: Simplify right side
209,193.81x = 32,824,172,157.60 - Step 5: Solve for x
x = 32,824,172,157.60/209,193.81 - Step 6: Final answer
x = 156,907.95
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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.