Finding the Fourth Proportional to 156,099.87, 215,418.08 and 84,479.95
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Solution
The fourth proportional to 156,099.87, 215,418.08 and 84,479.95 is: 116,582.47
Step by Step Solution
- Step 1: Write the proportion equation
156,099.87 : 215,418.08 = 84,479.95 : x - Step 2: Convert to fraction form
156,099.87/215,418.08 = 84,479.95/x - Step 3: Cross multiply
156,099.87x = 215,418.08 × 84,479.95 - Step 4: Simplify right side
156,099.87x = 18,198,508,205.10 - Step 5: Solve for x
x = 18,198,508,205.10/156,099.87 - Step 6: Final answer
x = 116,582.47
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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.