Finding the Fourth Proportional to 128,326.87, 192,487.02 and 34,830.19
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Solution
The fourth proportional to 128,326.87, 192,487.02 and 34,830.19 is: 52,244.39
Step by Step Solution
- Step 1: Write the proportion equation
128,326.87 : 192,487.02 = 34,830.19 : x - Step 2: Convert to fraction form
128,326.87/192,487.02 = 34,830.19/x - Step 3: Cross multiply
128,326.87x = 192,487.02 × 34,830.19 - Step 4: Simplify right side
128,326.87x = 6,704,359,479.13 - Step 5: Solve for x
x = 6,704,359,479.13/128,326.87 - Step 6: Final answer
x = 52,244.39
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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.