Finding the Fourth Proportional to 98,121.36, 135,245.60 and 69,403.92
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Solution
The fourth proportional to 98,121.36, 135,245.60 and 69,403.92 is: 95,662.91
Step by Step Solution
- Step 1: Write the proportion equation
98,121.36 : 135,245.60 = 69,403.92 : x - Step 2: Convert to fraction form
98,121.36/135,245.60 = 69,403.92/x - Step 3: Cross multiply
98,121.36x = 135,245.60 × 69,403.92 - Step 4: Simplify right side
98,121.36x = 9,386,574,802.75 - Step 5: Solve for x
x = 9,386,574,802.75/98,121.36 - Step 6: Final answer
x = 95,662.91
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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.