Finding the Fourth Proportional to 156,780.09, 216,358.49 and 85,161.31
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Solution
The fourth proportional to 156,780.09, 216,358.49 and 85,161.31 is: 117,523.67
Step by Step Solution
- Step 1: Write the proportion equation
156,780.09 : 216,358.49 = 85,161.31 : x - Step 2: Convert to fraction form
156,780.09/216,358.49 = 85,161.31/x - Step 3: Cross multiply
156,780.09x = 216,358.49 × 85,161.31 - Step 4: Simplify right side
156,780.09x = 18,425,372,110.03 - Step 5: Solve for x
x = 18,425,372,110.03/156,780.09 - Step 6: Final answer
x = 117,523.67
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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.