Finding the Fourth Proportional to 143,066.12, 197,440.67 and 82,639.31
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Solution
The fourth proportional to 143,066.12, 197,440.67 and 82,639.31 is: 114,047.69
Step by Step Solution
- Step 1: Write the proportion equation
143,066.12 : 197,440.67 = 82,639.31 : x - Step 2: Convert to fraction form
143,066.12/197,440.67 = 82,639.31/x - Step 3: Cross multiply
143,066.12x = 197,440.67 × 82,639.31 - Step 4: Simplify right side
143,066.12x = 16,316,359,954.13 - Step 5: Solve for x
x = 16,316,359,954.13/143,066.12 - Step 6: Final answer
x = 114,047.69
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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.