Finding the Fourth Proportional to 143,107.91, 197,479.02 and 79,440.68
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Solution
The fourth proportional to 143,107.91, 197,479.02 and 79,440.68 is: 109,622.65
Step by Step Solution
- Step 1: Write the proportion equation
143,107.91 : 197,479.02 = 79,440.68 : x - Step 2: Convert to fraction form
143,107.91/197,479.02 = 79,440.68/x - Step 3: Cross multiply
143,107.91x = 197,479.02 × 79,440.68 - Step 4: Simplify right side
143,107.91x = 15,687,867,634.53 - Step 5: Solve for x
x = 15,687,867,634.53/143,107.91 - Step 6: Final answer
x = 109,622.65
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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.