Finding the Fourth Proportional to 107,917.40, 161,703.30 and 68,403.80
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Solution
The fourth proportional to 107,917.40, 161,703.30 and 68,403.80 is: 102,496.17
Step by Step Solution
- Step 1: Write the proportion equation
107,917.40 : 161,703.30 = 68,403.80 : x - Step 2: Convert to fraction form
107,917.40/161,703.30 = 68,403.80/x - Step 3: Cross multiply
107,917.40x = 161,703.30 × 68,403.80 - Step 4: Simplify right side
107,917.40x = 11,061,120,192.54 - Step 5: Solve for x
x = 11,061,120,192.54/107,917.40 - Step 6: Final answer
x = 102,496.17
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.