Finding the Fourth Proportional to 156,163.32, 215,506.49 and 84,543.53
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Solution
The fourth proportional to 156,163.32, 215,506.49 and 84,543.53 is: 116,670.66
Step by Step Solution
- Step 1: Write the proportion equation
156,163.32 : 215,506.49 = 84,543.53 : x - Step 2: Convert to fraction form
156,163.32/215,506.49 = 84,543.53/x - Step 3: Cross multiply
156,163.32x = 215,506.49 × 84,543.53 - Step 4: Simplify right side
156,163.32x = 18,219,677,902.26 - Step 5: Solve for x
x = 18,219,677,902.26/156,163.32 - Step 6: Final answer
x = 116,670.66
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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.