Finding the Third Proportional to 128,725.50 and 199,315.50
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Solution
The third proportional to 128,725.50 and 199,315.50 is: 308,615.38
Step by Step Solution
- Step 1: Write the proportion equation
128,725.50 : 199,315.50 = 199,315.50 : x - Step 2: Convert to fraction form
128,725.50/199,315.50 = 199,315.50/x - Step 3: Cross multiply
128,725.50x = 199,315.50 × 199,315.50 - Step 4: Simplify right side
128,725.50x = 39,726,668,540.25 - Step 5: Solve for x
x = 39,726,668,540.25/128,725.50 - Step 6: Final answer
x = 308,615.38
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These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.