Finding the Fourth Proportional to 128,953.41, 193,367.90 and 54,053.44
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Solution
The fourth proportional to 128,953.41, 193,367.90 and 54,053.44 is: 81,054.09
Step by Step Solution
- Step 1: Write the proportion equation
128,953.41 : 193,367.90 = 54,053.44 : x - Step 2: Convert to fraction form
128,953.41/193,367.90 = 54,053.44/x - Step 3: Cross multiply
128,953.41x = 193,367.90 × 54,053.44 - Step 4: Simplify right side
128,953.41x = 10,452,200,767.96 - Step 5: Solve for x
x = 10,452,200,767.96/128,953.41 - Step 6: Final answer
x = 81,054.09
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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.