Finding the Fourth Proportional to 143,760.52, 198,390.86 and 79,232.06
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Solution
The fourth proportional to 143,760.52, 198,390.86 and 79,232.06 is: 109,340.99
Step by Step Solution
- Step 1: Write the proportion equation
143,760.52 : 198,390.86 = 79,232.06 : x - Step 2: Convert to fraction form
143,760.52/198,390.86 = 79,232.06/x - Step 3: Cross multiply
143,760.52x = 198,390.86 × 79,232.06 - Step 4: Simplify right side
143,760.52x = 15,718,916,622.79 - Step 5: Solve for x
x = 15,718,916,622.79/143,760.52 - Step 6: Final answer
x = 109,340.99
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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.