Finding the Fourth Proportional to 128,598.82, 177,512.95 and 104,683.97
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Solution
The fourth proportional to 128,598.82, 177,512.95 and 104,683.97 is: 144,501.80
Step by Step Solution
- Step 1: Write the proportion equation
128,598.82 : 177,512.95 = 104,683.97 : x - Step 2: Convert to fraction form
128,598.82/177,512.95 = 104,683.97/x - Step 3: Cross multiply
128,598.82x = 177,512.95 × 104,683.97 - Step 4: Simplify right side
128,598.82x = 18,582,760,907.05 - Step 5: Solve for x
x = 18,582,760,907.05/128,598.82 - Step 6: Final answer
x = 144,501.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.