Finding the Fourth Proportional to 100,920.96, 138,262.38 and 97,137.48
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Solution
The fourth proportional to 100,920.96, 138,262.38 and 97,137.48 is: 133,078.99
Step by Step Solution
- Step 1: Write the proportion equation
100,920.96 : 138,262.38 = 97,137.48 : x - Step 2: Convert to fraction form
100,920.96/138,262.38 = 97,137.48/x - Step 3: Cross multiply
100,920.96x = 138,262.38 × 97,137.48 - Step 4: Simplify right side
100,920.96x = 13,430,459,172.00 - Step 5: Solve for x
x = 13,430,459,172.00/100,920.96 - Step 6: Final answer
x = 133,078.99
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.