Finding the Fourth Proportional to 128,260.13, 192,415.70 and 39,509.84
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Solution
The fourth proportional to 128,260.13, 192,415.70 and 39,509.84 is: 59,272.62
Step by Step Solution
- Step 1: Write the proportion equation
128,260.13 : 192,415.70 = 39,509.84 : x - Step 2: Convert to fraction form
128,260.13/192,415.70 = 39,509.84/x - Step 3: Cross multiply
128,260.13x = 192,415.70 × 39,509.84 - Step 4: Simplify right side
128,260.13x = 7,602,314,100.30 - Step 5: Solve for x
x = 7,602,314,100.30/128,260.13 - Step 6: Final answer
x = 59,272.62
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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.