Finding the Fourth Proportional to 128,214.41, 192,343.48 and 57,162.83
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Solution
The fourth proportional to 128,214.41, 192,343.48 and 57,162.83 is: 85,753.99
Step by Step Solution
- Step 1: Write the proportion equation
128,214.41 : 192,343.48 = 57,162.83 : x - Step 2: Convert to fraction form
128,214.41/192,343.48 = 57,162.83/x - Step 3: Cross multiply
128,214.41x = 192,343.48 × 57,162.83 - Step 4: Simplify right side
128,214.41x = 10,994,896,544.22 - Step 5: Solve for x
x = 10,994,896,544.22/128,214.41 - Step 6: Final answer
x = 85,753.99
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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.