Finding the Fourth Proportional to 98,003.97, 135,321.66 and 75,307.19
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Solution
The fourth proportional to 98,003.97, 135,321.66 and 75,307.19 is: 103,982.45
Step by Step Solution
- Step 1: Write the proportion equation
98,003.97 : 135,321.66 = 75,307.19 : x - Step 2: Convert to fraction form
98,003.97/135,321.66 = 75,307.19/x - Step 3: Cross multiply
98,003.97x = 135,321.66 × 75,307.19 - Step 4: Simplify right side
98,003.97x = 10,190,693,284.13 - Step 5: Solve for x
x = 10,190,693,284.13/98,003.97 - Step 6: Final answer
x = 103,982.45
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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.