Finding the Fourth Proportional to 128,982.06, 177,992.73 and 71,618.40
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Solution
The fourth proportional to 128,982.06, 177,992.73 and 71,618.40 is: 98,832.00
Step by Step Solution
- Step 1: Write the proportion equation
128,982.06 : 177,992.73 = 71,618.40 : x - Step 2: Convert to fraction form
128,982.06/177,992.73 = 71,618.40/x - Step 3: Cross multiply
128,982.06x = 177,992.73 × 71,618.40 - Step 4: Simplify right side
128,982.06x = 12,747,554,534.23 - Step 5: Solve for x
x = 12,747,554,534.23/128,982.06 - Step 6: Final answer
x = 98,832.00
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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.