Finding the Fourth Proportional to 206,718.48, 285,315.93 and 126,128.70
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Solution
The fourth proportional to 206,718.48, 285,315.93 and 126,128.70 is: 174,084.71
Step by Step Solution
- Step 1: Write the proportion equation
206,718.48 : 285,315.93 = 126,128.70 : x - Step 2: Convert to fraction form
206,718.48/285,315.93 = 126,128.70/x - Step 3: Cross multiply
206,718.48x = 285,315.93 × 126,128.70 - Step 4: Simplify right side
206,718.48x = 35,986,527,340.19 - Step 5: Solve for x
x = 35,986,527,340.19/206,718.48 - Step 6: Final answer
x = 174,084.71
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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.