Finding the Fourth Proportional to 151,715.21, 209,378.86 and 83,745.68
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Solution
The fourth proportional to 151,715.21, 209,378.86 and 83,745.68 is: 115,575.59
Step by Step Solution
- Step 1: Write the proportion equation
151,715.21 : 209,378.86 = 83,745.68 : x - Step 2: Convert to fraction form
151,715.21/209,378.86 = 83,745.68/x - Step 3: Cross multiply
151,715.21x = 209,378.86 × 83,745.68 - Step 4: Simplify right side
151,715.21x = 17,534,573,752.07 - Step 5: Solve for x
x = 17,534,573,752.07/151,715.21 - Step 6: Final answer
x = 115,575.59
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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.