Finding the Fourth Proportional to 156,765.26, 216,337.62 and 85,146.68
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Solution
The fourth proportional to 156,765.26, 216,337.62 and 85,146.68 is: 117,503.27
Step by Step Solution
- Step 1: Write the proportion equation
156,765.26 : 216,337.62 = 85,146.68 : x - Step 2: Convert to fraction form
156,765.26/216,337.62 = 85,146.68/x - Step 3: Cross multiply
156,765.26x = 216,337.62 × 85,146.68 - Step 4: Simplify right side
156,765.26x = 18,420,430,102.10 - Step 5: Solve for x
x = 18,420,430,102.10/156,765.26 - Step 6: Final answer
x = 117,503.27
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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.