Finding the Third Proportional to 77,728.50 and 127,239.75
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Solution
The third proportional to 77,728.50 and 127,239.75 is: 208,288.52
Step by Step Solution
- Step 1: Write the proportion equation
77,728.50 : 127,239.75 = 127,239.75 : x - Step 2: Convert to fraction form
77,728.50/127,239.75 = 127,239.75/x - Step 3: Cross multiply
77,728.50x = 127,239.75 × 127,239.75 - Step 4: Simplify right side
77,728.50x = 16,189,953,980.06 - Step 5: Solve for x
x = 16,189,953,980.06/77,728.50 - Step 6: Final answer
x = 208,288.52
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Why These Related Problems?
These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.