Finding the Fourth Proportional to 128,368.92, 192,598.98 and 57,285.09
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Solution
The fourth proportional to 128,368.92, 192,598.98 and 57,285.09 is: 85,947.98
Step by Step Solution
- Step 1: Write the proportion equation
128,368.92 : 192,598.98 = 57,285.09 : x - Step 2: Convert to fraction form
128,368.92/192,598.98 = 57,285.09/x - Step 3: Cross multiply
128,368.92x = 192,598.98 × 57,285.09 - Step 4: Simplify right side
128,368.92x = 11,033,049,903.21 - Step 5: Solve for x
x = 11,033,049,903.21/128,368.92 - Step 6: Final answer
x = 85,947.98
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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.