Finding the Fourth Proportional to 128,496.74, 177,325.08 and 71,907.98
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Solution
The fourth proportional to 128,496.74, 177,325.08 and 71,907.98 is: 99,232.78
Step by Step Solution
- Step 1: Write the proportion equation
128,496.74 : 177,325.08 = 71,907.98 : x - Step 2: Convert to fraction form
128,496.74/177,325.08 = 71,907.98/x - Step 3: Cross multiply
128,496.74x = 177,325.08 × 71,907.98 - Step 4: Simplify right side
128,496.74x = 12,751,088,306.14 - Step 5: Solve for x
x = 12,751,088,306.14/128,496.74 - Step 6: Final answer
x = 99,232.78
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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.