Finding the Fourth Proportional to 157,078.70, 235,618.05 and 121,649.30
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Solution
The fourth proportional to 157,078.70, 235,618.05 and 121,649.30 is: 182,473.95
Step by Step Solution
- Step 1: Write the proportion equation
157,078.70 : 235,618.05 = 121,649.30 : x - Step 2: Convert to fraction form
157,078.70/235,618.05 = 121,649.30/x - Step 3: Cross multiply
157,078.70x = 235,618.05 × 121,649.30 - Step 4: Simplify right side
157,078.70x = 28,662,770,849.87 - Step 5: Solve for x
x = 28,662,770,849.87/157,078.70 - Step 6: Final answer
x = 182,473.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.