Finding the Fourth Proportional to 155,358.69, 214,388.82 and 91,716.99
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Solution
The fourth proportional to 155,358.69, 214,388.82 and 91,716.99 is: 126,565.80
Step by Step Solution
- Step 1: Write the proportion equation
155,358.69 : 214,388.82 = 91,716.99 : x - Step 2: Convert to fraction form
155,358.69/214,388.82 = 91,716.99/x - Step 3: Cross multiply
155,358.69x = 214,388.82 × 91,716.99 - Step 4: Simplify right side
155,358.69x = 19,663,097,260.05 - Step 5: Solve for x
x = 19,663,097,260.05/155,358.69 - Step 6: Final answer
x = 126,565.80
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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.