Finding the Third Proportional to 128,992.50 and 199,239.75
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Solution
The third proportional to 128,992.50 and 199,239.75 is: 307,742.53
Step by Step Solution
- Step 1: Write the proportion equation
128,992.50 : 199,239.75 = 199,239.75 : x - Step 2: Convert to fraction form
128,992.50/199,239.75 = 199,239.75/x - Step 3: Cross multiply
128,992.50x = 199,239.75 × 199,239.75 - Step 4: Simplify right side
128,992.50x = 39,696,477,980.06 - Step 5: Solve for x
x = 39,696,477,980.06/128,992.50 - Step 6: Final answer
x = 307,742.53
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Why These Related Problems?
These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.