Finding the Fourth Proportional to 128,359.28, 192,467.81 and 52,511.09
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Solution
The fourth proportional to 128,359.28, 192,467.81 and 52,511.09 is: 78,737.54
Step by Step Solution
- Step 1: Write the proportion equation
128,359.28 : 192,467.81 = 52,511.09 : x - Step 2: Convert to fraction form
128,359.28/192,467.81 = 52,511.09/x - Step 3: Cross multiply
128,359.28x = 192,467.81 × 52,511.09 - Step 4: Simplify right side
128,359.28x = 10,106,693,661.95 - Step 5: Solve for x
x = 10,106,693,661.95/128,359.28 - Step 6: Final answer
x = 78,737.54
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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.