Finding the Fourth Proportional to 106,879.36, 147,392.64 and 79,715.48
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Solution
The fourth proportional to 106,879.36, 147,392.64 and 79,715.48 is: 109,932.12
Step by Step Solution
- Step 1: Write the proportion equation
106,879.36 : 147,392.64 = 79,715.48 : x - Step 2: Convert to fraction form
106,879.36/147,392.64 = 79,715.48/x - Step 3: Cross multiply
106,879.36x = 147,392.64 × 79,715.48 - Step 4: Simplify right side
106,879.36x = 11,749,475,046.07 - Step 5: Solve for x
x = 11,749,475,046.07/106,879.36 - Step 6: Final answer
x = 109,932.12
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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.