Finding the Fourth Proportional to 143,121.96, 197,491.50 and 79,444.08
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Solution
The fourth proportional to 143,121.96, 197,491.50 and 79,444.08 is: 109,623.50
Step by Step Solution
- Step 1: Write the proportion equation
143,121.96 : 197,491.50 = 79,444.08 : x - Step 2: Convert to fraction form
143,121.96/197,491.50 = 79,444.08/x - Step 3: Cross multiply
143,121.96x = 197,491.50 × 79,444.08 - Step 4: Simplify right side
143,121.96x = 15,689,530,525.32 - Step 5: Solve for x
x = 15,689,530,525.32/143,121.96 - Step 6: Final answer
x = 109,623.50
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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.