Finding the Fourth Proportional to 120,637.98, 180,956.97 and 82,649.79
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Solution
The fourth proportional to 120,637.98, 180,956.97 and 82,649.79 is: 123,974.69
Step by Step Solution
- Step 1: Write the proportion equation
120,637.98 : 180,956.97 = 82,649.79 : x - Step 2: Convert to fraction form
120,637.98/180,956.97 = 82,649.79/x - Step 3: Cross multiply
120,637.98x = 180,956.97 × 82,649.79 - Step 4: Simplify right side
120,637.98x = 14,956,055,569.54 - Step 5: Solve for x
x = 14,956,055,569.54/120,637.98 - Step 6: Final answer
x = 123,974.69
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1.5x scale
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.