Finding the Fourth Proportional to 156,859.84, 216,466.12 and 85,239.88
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Solution
The fourth proportional to 156,859.84, 216,466.12 and 85,239.88 is: 117,630.78
Step by Step Solution
- Step 1: Write the proportion equation
156,859.84 : 216,466.12 = 85,239.88 : x - Step 2: Convert to fraction form
156,859.84/216,466.12 = 85,239.88/x - Step 3: Cross multiply
156,859.84x = 216,466.12 × 85,239.88 - Step 4: Simplify right side
156,859.84x = 18,451,546,092.87 - Step 5: Solve for x
x = 18,451,546,092.87/156,859.84 - Step 6: Final answer
x = 117,630.78
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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.