Finding the Fourth Proportional to 202,872.90, 279,962.19 and 112,221.75
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Solution
The fourth proportional to 202,872.90, 279,962.19 and 112,221.75 is: 154,864.68
Step by Step Solution
- Step 1: Write the proportion equation
202,872.90 : 279,962.19 = 112,221.75 : x - Step 2: Convert to fraction form
202,872.90/279,962.19 = 112,221.75/x - Step 3: Cross multiply
202,872.90x = 279,962.19 × 112,221.75 - Step 4: Simplify right side
202,872.90x = 31,417,846,895.63 - Step 5: Solve for x
x = 31,417,846,895.63/202,872.90 - Step 6: Final answer
x = 154,864.68
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1.5x scale
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.