Finding the Fourth Proportional to 143,803.23, 198,449.12 and 83,409.63
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Solution
The fourth proportional to 143,803.23, 198,449.12 and 83,409.63 is: 115,105.67
Step by Step Solution
- Step 1: Write the proportion equation
143,803.23 : 198,449.12 = 83,409.63 : x - Step 2: Convert to fraction form
143,803.23/198,449.12 = 83,409.63/x - Step 3: Cross multiply
143,803.23x = 198,449.12 × 83,409.63 - Step 4: Simplify right side
143,803.23x = 16,552,566,263.73 - Step 5: Solve for x
x = 16,552,566,263.73/143,803.23 - Step 6: Final answer
x = 115,105.67
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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.