Finding the Fourth Proportional to 128,766.58, 193,205.36 and 69,643.87
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Solution
The fourth proportional to 128,766.58, 193,205.36 and 69,643.87 is: 104,495.82
Step by Step Solution
- Step 1: Write the proportion equation
128,766.58 : 193,205.36 = 69,643.87 : x - Step 2: Convert to fraction form
128,766.58/193,205.36 = 69,643.87/x - Step 3: Cross multiply
128,766.58x = 193,205.36 × 69,643.87 - Step 4: Simplify right side
128,766.58x = 13,455,568,975.14 - Step 5: Solve for x
x = 13,455,568,975.14/128,766.58 - Step 6: Final answer
x = 104,495.82
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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.