Finding the Fourth Proportional to 216,432.51, 298,671.13 and 120,939.99
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Solution
The fourth proportional to 216,432.51, 298,671.13 and 120,939.99 is: 166,893.98
Step by Step Solution
- Step 1: Write the proportion equation
216,432.51 : 298,671.13 = 120,939.99 : x - Step 2: Convert to fraction form
216,432.51/298,671.13 = 120,939.99/x - Step 3: Cross multiply
216,432.51x = 298,671.13 × 120,939.99 - Step 4: Simplify right side
216,432.51x = 36,121,283,475.49 - Step 5: Solve for x
x = 36,121,283,475.49/216,432.51 - Step 6: Final answer
x = 166,893.98
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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.