Finding the Fourth Proportional to 163,721.75, 225,995.76 and 103,331.70
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Solution
The fourth proportional to 163,721.75, 225,995.76 and 103,331.70 is: 142,635.46
Step by Step Solution
- Step 1: Write the proportion equation
163,721.75 : 225,995.76 = 103,331.70 : x - Step 2: Convert to fraction form
163,721.75/225,995.76 = 103,331.70/x - Step 3: Cross multiply
163,721.75x = 225,995.76 × 103,331.70 - Step 4: Simplify right side
163,721.75x = 23,352,526,073.59 - Step 5: Solve for x
x = 23,352,526,073.59/163,721.75 - Step 6: Final answer
x = 142,635.46
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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.