Finding the Fourth Proportional to 97,775.15, 146,414.64 and 81,938.54
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Solution
The fourth proportional to 97,775.15, 146,414.64 and 81,938.54 is: 122,699.90
Step by Step Solution
- Step 1: Write the proportion equation
97,775.15 : 146,414.64 = 81,938.54 : x - Step 2: Convert to fraction form
97,775.15/146,414.64 = 81,938.54/x - Step 3: Cross multiply
97,775.15x = 146,414.64 × 81,938.54 - Step 4: Simplify right side
97,775.15x = 11,997,001,225.05 - Step 5: Solve for x
x = 11,997,001,225.05/97,775.15 - Step 6: Final answer
x = 122,699.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.