Finding the Fourth Proportional to 146,649.10, 202,381.50 and 81,239.62
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Solution
The fourth proportional to 146,649.10, 202,381.50 and 81,239.62 is: 112,113.86
Step by Step Solution
- Step 1: Write the proportion equation
146,649.10 : 202,381.50 = 81,239.62 : x - Step 2: Convert to fraction form
146,649.10/202,381.50 = 81,239.62/x - Step 3: Cross multiply
146,649.10x = 202,381.50 × 81,239.62 - Step 4: Simplify right side
146,649.10x = 16,441,396,155.03 - Step 5: Solve for x
x = 16,441,396,155.03/146,649.10 - Step 6: Final answer
x = 112,113.86
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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.