Finding the Fourth Proportional to 209,585.26, 289,182.81 and 124,685.74
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Solution
The fourth proportional to 209,585.26, 289,182.81 and 124,685.74 is: 172,039.64
Step by Step Solution
- Step 1: Write the proportion equation
209,585.26 : 289,182.81 = 124,685.74 : x - Step 2: Convert to fraction form
209,585.26/289,182.81 = 124,685.74/x - Step 3: Cross multiply
209,585.26x = 289,182.81 × 124,685.74 - Step 4: Simplify right side
209,585.26x = 36,056,972,660.13 - Step 5: Solve for x
x = 36,056,972,660.13/209,585.26 - Step 6: Final answer
x = 172,039.64
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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.