Finding the Fourth Proportional to 122,409.45, 168,977.36 and 114,748.99
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Solution
The fourth proportional to 122,409.45, 168,977.36 and 114,748.99 is: 158,402.65
Step by Step Solution
- Step 1: Write the proportion equation
122,409.45 : 168,977.36 = 114,748.99 : x - Step 2: Convert to fraction form
122,409.45/168,977.36 = 114,748.99/x - Step 3: Cross multiply
122,409.45x = 168,977.36 × 114,748.99 - Step 4: Simplify right side
122,409.45x = 19,389,981,257.30 - Step 5: Solve for x
x = 19,389,981,257.30/122,409.45 - Step 6: Final answer
x = 158,402.65
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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.