Finding the Fourth Proportional to 98,416.15, 135,879.66 and 75,715.09
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Solution
The fourth proportional to 98,416.15, 135,879.66 and 75,715.09 is: 104,537.12
Step by Step Solution
- Step 1: Write the proportion equation
98,416.15 : 135,879.66 = 75,715.09 : x - Step 2: Convert to fraction form
98,416.15/135,879.66 = 75,715.09/x - Step 3: Cross multiply
98,416.15x = 135,879.66 × 75,715.09 - Step 4: Simplify right side
98,416.15x = 10,288,140,686.07 - Step 5: Solve for x
x = 10,288,140,686.07/98,416.15 - Step 6: Final answer
x = 104,537.12
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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.