Finding the Fourth Proportional to 168,694.37, 252,074.52 and 128,490.02
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Solution
The fourth proportional to 168,694.37, 252,074.52 and 128,490.02 is: 191,998.46
Step by Step Solution
- Step 1: Write the proportion equation
168,694.37 : 252,074.52 = 128,490.02 : x - Step 2: Convert to fraction form
168,694.37/252,074.52 = 128,490.02/x - Step 3: Cross multiply
168,694.37x = 252,074.52 × 128,490.02 - Step 4: Simplify right side
168,694.37x = 32,389,058,855.92 - Step 5: Solve for x
x = 32,389,058,855.92/168,694.37 - Step 6: Final answer
x = 191,998.46
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.