Finding the Fourth Proportional to 127,828.29, 176,403.93 and 71,243.31
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Solution
The fourth proportional to 127,828.29, 176,403.93 and 71,243.31 is: 98,316.26
Step by Step Solution
- Step 1: Write the proportion equation
127,828.29 : 176,403.93 = 71,243.31 : x - Step 2: Convert to fraction form
127,828.29/176,403.93 = 71,243.31/x - Step 3: Cross multiply
127,828.29x = 176,403.93 × 71,243.31 - Step 4: Simplify right side
127,828.29x = 12,567,599,870.21 - Step 5: Solve for x
x = 12,567,599,870.21/127,828.29 - Step 6: Final answer
x = 98,316.26
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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.