Finding the Fourth Proportional to 97,076.12, 133,628.20 and 83,691.68
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Solution
The fourth proportional to 97,076.12, 133,628.20 and 83,691.68 is: 115,204.12
Step by Step Solution
- Step 1: Write the proportion equation
97,076.12 : 133,628.20 = 83,691.68 : x - Step 2: Convert to fraction form
97,076.12/133,628.20 = 83,691.68/x - Step 3: Cross multiply
97,076.12x = 133,628.20 × 83,691.68 - Step 4: Simplify right side
97,076.12x = 11,183,568,553.38 - Step 5: Solve for x
x = 11,183,568,553.38/97,076.12 - Step 6: Final answer
x = 115,204.12
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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.