Finding the Fourth Proportional to 143,099.41, 197,467.29 and 79,432.18
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Solution
The fourth proportional to 143,099.41, 197,467.29 and 79,432.18 is: 109,610.92
Step by Step Solution
- Step 1: Write the proportion equation
143,099.41 : 197,467.29 = 79,432.18 : x - Step 2: Convert to fraction form
143,099.41/197,467.29 = 79,432.18/x - Step 3: Cross multiply
143,099.41x = 197,467.29 × 79,432.18 - Step 4: Simplify right side
143,099.41x = 15,685,257,323.39 - Step 5: Solve for x
x = 15,685,257,323.39/143,099.41 - Step 6: Final answer
x = 109,610.92
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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.