Finding the Fourth Proportional to 128,393.19, 192,485.44 and 53,569.08
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Solution
The fourth proportional to 128,393.19, 192,485.44 and 53,569.08 is: 80,310.08
Step by Step Solution
- Step 1: Write the proportion equation
128,393.19 : 192,485.44 = 53,569.08 : x - Step 2: Convert to fraction form
128,393.19/192,485.44 = 53,569.08/x - Step 3: Cross multiply
128,393.19x = 192,485.44 × 53,569.08 - Step 4: Simplify right side
128,393.19x = 10,311,267,934.20 - Step 5: Solve for x
x = 10,311,267,934.20/128,393.19 - Step 6: Final answer
x = 80,310.08
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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.