Finding the Fourth Proportional to 128,995.36, 193,567.76 and 54,108.84
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Solution
The fourth proportional to 128,995.36, 193,567.76 and 54,108.84 is: 81,194.60
Step by Step Solution
- Step 1: Write the proportion equation
128,995.36 : 193,567.76 = 54,108.84 : x - Step 2: Convert to fraction form
128,995.36/193,567.76 = 54,108.84/x - Step 3: Cross multiply
128,995.36x = 193,567.76 × 54,108.84 - Step 4: Simplify right side
128,995.36x = 10,473,726,955.00 - Step 5: Solve for x
x = 10,473,726,955.00/128,995.36 - Step 6: Final answer
x = 81,194.60
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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.