Finding the Fourth Proportional to 128,423.26, 192,646.23 and 33,653.26
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Solution
The fourth proportional to 128,423.26, 192,646.23 and 33,653.26 is: 50,482.86
Step by Step Solution
- Step 1: Write the proportion equation
128,423.26 : 192,646.23 = 33,653.26 : x - Step 2: Convert to fraction form
128,423.26/192,646.23 = 33,653.26/x - Step 3: Cross multiply
128,423.26x = 192,646.23 × 33,653.26 - Step 4: Simplify right side
128,423.26x = 6,483,173,666.21 - Step 5: Solve for x
x = 6,483,173,666.21/128,423.26 - Step 6: Final answer
x = 50,482.86
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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.