Finding the Fourth Proportional to 98,221.36, 135,609.04 and 76,673.94
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Solution
The fourth proportional to 98,221.36, 135,609.04 and 76,673.94 is: 105,859.66
Step by Step Solution
- Step 1: Write the proportion equation
98,221.36 : 135,609.04 = 76,673.94 : x - Step 2: Convert to fraction form
98,221.36/135,609.04 = 76,673.94/x - Step 3: Cross multiply
98,221.36x = 135,609.04 × 76,673.94 - Step 4: Simplify right side
98,221.36x = 10,397,679,315.24 - Step 5: Solve for x
x = 10,397,679,315.24/98,221.36 - Step 6: Final answer
x = 105,859.66
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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.