Finding the Fourth Proportional to 128,366.91, 192,595.99 and 57,283.09
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Solution
The fourth proportional to 128,366.91, 192,595.99 and 57,283.09 is: 85,944.99
Step by Step Solution
- Step 1: Write the proportion equation
128,366.91 : 192,595.99 = 57,283.09 : x - Step 2: Convert to fraction form
128,366.91/192,595.99 = 57,283.09/x - Step 3: Cross multiply
128,366.91x = 192,595.99 × 57,283.09 - Step 4: Simplify right side
128,366.91x = 11,032,493,428.81 - Step 5: Solve for x
x = 11,032,493,428.81/128,366.91 - Step 6: Final answer
x = 85,944.99
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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.