Finding the Fourth Proportional to 209,170.95, 288,660.17 and 113,683.79
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Solution
The fourth proportional to 209,170.95, 288,660.17 and 113,683.79 is: 156,885.94
Step by Step Solution
- Step 1: Write the proportion equation
209,170.95 : 288,660.17 = 113,683.79 : x - Step 2: Convert to fraction form
209,170.95/288,660.17 = 113,683.79/x - Step 3: Cross multiply
209,170.95x = 288,660.17 × 113,683.79 - Step 4: Simplify right side
209,170.95x = 32,815,982,147.64 - Step 5: Solve for x
x = 32,815,982,147.64/209,170.95 - Step 6: Final answer
x = 156,885.94
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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.