Finding the Fourth Proportional to 126,503.71, 189,786.70 and 89,136.75
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Solution
The fourth proportional to 126,503.71, 189,786.70 and 89,136.75 is: 133,727.07
Step by Step Solution
- Step 1: Write the proportion equation
126,503.71 : 189,786.70 = 89,136.75 : x - Step 2: Convert to fraction form
126,503.71/189,786.70 = 89,136.75/x - Step 3: Cross multiply
126,503.71x = 189,786.70 × 89,136.75 - Step 4: Simplify right side
126,503.71x = 16,916,969,631.23 - Step 5: Solve for x
x = 16,916,969,631.23/126,503.71 - Step 6: Final answer
x = 133,727.07
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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.