Finding the Fourth Proportional to 128,437.92, 177,246.88 and 77,450.40
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Solution
The fourth proportional to 128,437.92, 177,246.88 and 77,450.40 is: 106,883.09
Step by Step Solution
- Step 1: Write the proportion equation
128,437.92 : 177,246.88 = 77,450.40 : x - Step 2: Convert to fraction form
128,437.92/177,246.88 = 77,450.40/x - Step 3: Cross multiply
128,437.92x = 177,246.88 × 77,450.40 - Step 4: Simplify right side
128,437.92x = 13,727,841,754.75 - Step 5: Solve for x
x = 13,727,841,754.75/128,437.92 - Step 6: Final answer
x = 106,883.09
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1.5x scale
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.