Finding the Fourth Proportional to 151,467.21, 208,991.07 and 86,932.49
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Solution
The fourth proportional to 151,467.21, 208,991.07 and 86,932.49 is: 119,947.50
Step by Step Solution
- Step 1: Write the proportion equation
151,467.21 : 208,991.07 = 86,932.49 : x - Step 2: Convert to fraction form
151,467.21/208,991.07 = 86,932.49/x - Step 3: Cross multiply
151,467.21x = 208,991.07 × 86,932.49 - Step 4: Simplify right side
151,467.21x = 18,168,113,057.91 - Step 5: Solve for x
x = 18,168,113,057.91/151,467.21 - Step 6: Final answer
x = 119,947.50
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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.