Finding the Fourth Proportional to 98,109.75, 135,391.47 and 53,397.75
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Solution
The fourth proportional to 98,109.75, 135,391.47 and 53,397.75 is: 73,688.90
Step by Step Solution
- Step 1: Write the proportion equation
98,109.75 : 135,391.47 = 53,397.75 : x - Step 2: Convert to fraction form
98,109.75/135,391.47 = 53,397.75/x - Step 3: Cross multiply
98,109.75x = 135,391.47 × 53,397.75 - Step 4: Simplify right side
98,109.75x = 7,229,599,867.19 - Step 5: Solve for x
x = 7,229,599,867.19/98,109.75 - Step 6: Final answer
x = 73,688.90
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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.