Finding the Fourth Proportional to 158,700.63, 218,972.64 and 91,593.75
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Solution
The fourth proportional to 158,700.63, 218,972.64 and 91,593.75 is: 126,379.62
Step by Step Solution
- Step 1: Write the proportion equation
158,700.63 : 218,972.64 = 91,593.75 : x - Step 2: Convert to fraction form
158,700.63/218,972.64 = 91,593.75/x - Step 3: Cross multiply
158,700.63x = 218,972.64 × 91,593.75 - Step 4: Simplify right side
158,700.63x = 20,056,525,245 - Step 5: Solve for x
x = 20,056,525,245/158,700.63 - Step 6: Final answer
x = 126,379.62
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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.