Finding the Fourth Proportional to 209,134.72, 288,607.12 and 113,642.24
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Solution
The fourth proportional to 209,134.72, 288,607.12 and 113,642.24 is: 156,826.95
Step by Step Solution
- Step 1: Write the proportion equation
209,134.72 : 288,607.12 = 113,642.24 : x - Step 2: Convert to fraction form
209,134.72/288,607.12 = 113,642.24/x - Step 3: Cross multiply
209,134.72x = 288,607.12 × 113,642.24 - Step 4: Simplify right side
209,134.72x = 32,797,959,596.75 - Step 5: Solve for x
x = 32,797,959,596.75/209,134.72 - Step 6: Final answer
x = 156,826.95
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1.5x scale
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.