Finding the Fourth Proportional to 128,576.58, 192,895.44 and 53,655.09
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Solution
The fourth proportional to 128,576.58, 192,895.44 and 53,655.09 is: 80,495.39
Step by Step Solution
- Step 1: Write the proportion equation
128,576.58 : 192,895.44 = 53,655.09 : x - Step 2: Convert to fraction form
128,576.58/192,895.44 = 53,655.09/x - Step 3: Cross multiply
128,576.58x = 192,895.44 × 53,655.09 - Step 4: Simplify right side
128,576.58x = 10,349,822,193.79 - Step 5: Solve for x
x = 10,349,822,193.79/128,576.58 - Step 6: Final answer
x = 80,495.39
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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.