Finding the Fourth Proportional to 143,803.41, 198,449.37 and 83,409.81
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Solution
The fourth proportional to 143,803.41, 198,449.37 and 83,409.81 is: 115,105.92
Step by Step Solution
- Step 1: Write the proportion equation
143,803.41 : 198,449.37 = 83,409.81 : x - Step 2: Convert to fraction form
143,803.41/198,449.37 = 83,409.81/x - Step 3: Cross multiply
143,803.41x = 198,449.37 × 83,409.81 - Step 4: Simplify right side
143,803.41x = 16,552,624,246.32 - Step 5: Solve for x
x = 16,552,624,246.32/143,803.41 - Step 6: Final answer
x = 115,105.92
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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.