Finding the Fourth Proportional to 128,280.30, 192,338.95 and 112,516.99
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Solution
The fourth proportional to 128,280.30, 192,338.95 and 112,516.99 is: 168,703.99
Step by Step Solution
- Step 1: Write the proportion equation
128,280.30 : 192,338.95 = 112,516.99 : x - Step 2: Convert to fraction form
128,280.30/192,338.95 = 112,516.99/x - Step 3: Cross multiply
128,280.30x = 192,338.95 × 112,516.99 - Step 4: Simplify right side
128,280.30x = 21,641,398,951.62 - Step 5: Solve for x
x = 21,641,398,951.62/128,280.30 - Step 6: Final answer
x = 168,703.99
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1.5x scale
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.