Finding the Fourth Proportional to 156,161.88, 215,505.12 and 84,543.44
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Solution
The fourth proportional to 156,161.88, 215,505.12 and 84,543.44 is: 116,670.88
Step by Step Solution
- Step 1: Write the proportion equation
156,161.88 : 215,505.12 = 84,543.44 : x - Step 2: Convert to fraction form
156,161.88/215,505.12 = 84,543.44/x - Step 3: Cross multiply
156,161.88x = 215,505.12 × 84,543.44 - Step 4: Simplify right side
156,161.88x = 18,219,544,182.41 - Step 5: Solve for x
x = 18,219,544,182.41/156,161.88 - Step 6: Final answer
x = 116,670.88
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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.