Finding the Fourth Proportional to 98,153.82, 135,459.27 and 55,715.09
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Solution
The fourth proportional to 98,153.82, 135,459.27 and 55,715.09 is: 76,890.79
Step by Step Solution
- Step 1: Write the proportion equation
98,153.82 : 135,459.27 = 55,715.09 : x - Step 2: Convert to fraction form
98,153.82/135,459.27 = 55,715.09/x - Step 3: Cross multiply
98,153.82x = 135,459.27 × 55,715.09 - Step 4: Simplify right side
98,153.82x = 7,547,124,742.09 - Step 5: Solve for x
x = 7,547,124,742.09/98,153.82 - Step 6: Final answer
x = 76,890.79
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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.