Finding the Fourth Proportional to 128,276.10, 192,435.21 and 39,529.62
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Solution
The fourth proportional to 128,276.10, 192,435.21 and 39,529.62 is: 59,300.92
Step by Step Solution
- Step 1: Write the proportion equation
128,276.10 : 192,435.21 = 39,529.62 : x - Step 2: Convert to fraction form
128,276.10/192,435.21 = 39,529.62/x - Step 3: Cross multiply
128,276.10x = 192,435.21 × 39,529.62 - Step 4: Simplify right side
128,276.10x = 7,606,890,725.92 - Step 5: Solve for x
x = 7,606,890,725.92/128,276.10 - Step 6: Final answer
x = 59,300.92
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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.