Finding the Fourth Proportional to 138,324.70, 207,487.05 and 102,895.30
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Solution
The fourth proportional to 138,324.70, 207,487.05 and 102,895.30 is: 154,342.95
Step by Step Solution
- Step 1: Write the proportion equation
138,324.70 : 207,487.05 = 102,895.30 : x - Step 2: Convert to fraction form
138,324.70/207,487.05 = 102,895.30/x - Step 3: Cross multiply
138,324.70x = 207,487.05 × 102,895.30 - Step 4: Simplify right side
138,324.70x = 21,349,442,255.87 - Step 5: Solve for x
x = 21,349,442,255.87/138,324.70 - Step 6: Final answer
x = 154,342.95
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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.