Finding the Fourth Proportional to 98,412.15, 135,874.14 and 75,711.09
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Solution
The fourth proportional to 98,412.15, 135,874.14 and 75,711.09 is: 104,531.60
Step by Step Solution
- Step 1: Write the proportion equation
98,412.15 : 135,874.14 = 75,711.09 : x - Step 2: Convert to fraction form
98,412.15/135,874.14 = 75,711.09/x - Step 3: Cross multiply
98,412.15x = 135,874.14 × 75,711.09 - Step 4: Simplify right side
98,412.15x = 10,287,179,242.21 - Step 5: Solve for x
x = 10,287,179,242.21/98,412.15 - Step 6: Final answer
x = 104,531.60
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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.