Finding the Fourth Proportional to 154,496.13, 213,207.96 and 87,428.13
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Solution
The fourth proportional to 154,496.13, 213,207.96 and 87,428.13 is: 120,652.69
Step by Step Solution
- Step 1: Write the proportion equation
154,496.13 : 213,207.96 = 87,428.13 : x - Step 2: Convert to fraction form
154,496.13/213,207.96 = 87,428.13/x - Step 3: Cross multiply
154,496.13x = 213,207.96 × 87,428.13 - Step 4: Simplify right side
154,496.13x = 18,640,373,243.91 - Step 5: Solve for x
x = 18,640,373,243.91/154,496.13 - Step 6: Final answer
x = 120,652.69
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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.