Finding the Fourth Proportional to 156,641.67, 216,165.69 and 85,021.68
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Solution
The fourth proportional to 156,641.67, 216,165.69 and 85,021.68 is: 117,330.02
Step by Step Solution
- Step 1: Write the proportion equation
156,641.67 : 216,165.69 = 85,021.68 : x - Step 2: Convert to fraction form
156,641.67/216,165.69 = 85,021.68/x - Step 3: Cross multiply
156,641.67x = 216,165.69 × 85,021.68 - Step 4: Simplify right side
156,641.67x = 18,378,770,122.16 - Step 5: Solve for x
x = 18,378,770,122.16/156,641.67 - Step 6: Final answer
x = 117,330.02
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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.