Finding the Fourth Proportional to 128,794.97, 177,531.76 and 101,526.62
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Solution
The fourth proportional to 128,794.97, 177,531.76 and 101,526.62 is: 139,944.90
Step by Step Solution
- Step 1: Write the proportion equation
128,794.97 : 177,531.76 = 101,526.62 : x - Step 2: Convert to fraction form
128,794.97/177,531.76 = 101,526.62/x - Step 3: Cross multiply
128,794.97x = 177,531.76 × 101,526.62 - Step 4: Simplify right side
128,794.97x = 18,024,198,901.61 - Step 5: Solve for x
x = 18,024,198,901.61/128,794.97 - Step 6: Final answer
x = 139,944.90
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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.