Finding the Fourth Proportional to 129,708.75, 178,998.08 and 70,092.75
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Solution
The fourth proportional to 129,708.75, 178,998.08 and 70,092.75 is: 96,728.00
Step by Step Solution
- Step 1: Write the proportion equation
129,708.75 : 178,998.08 = 70,092.75 : x - Step 2: Convert to fraction form
129,708.75/178,998.08 = 70,092.75/x - Step 3: Cross multiply
129,708.75x = 178,998.08 × 70,092.75 - Step 4: Simplify right side
129,708.75x = 12,546,467,321.46 - Step 5: Solve for x
x = 12,546,467,321.46/129,708.75 - Step 6: Final answer
x = 96,728.00
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.