Finding the Third Proportional to 77,987.81 and 122,244.19
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Solution
The third proportional to 77,987.81 and 122,244.19 is: 191,615.09
Step by Step Solution
- Step 1: Write the proportion equation
77,987.81 : 122,244.19 = 122,244.19 : x - Step 2: Convert to fraction form
77,987.81/122,244.19 = 122,244.19/x - Step 3: Cross multiply
77,987.81x = 122,244.19 × 122,244.19 - Step 4: Simplify right side
77,987.81x = 14,943,641,377.54 - Step 5: Solve for x
x = 14,943,641,377.54/77,987.81 - Step 6: Final answer
x = 191,615.09
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Why These Related Problems?
These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.