Finding the Fourth Proportional to 122,304.94, 168,781.12 and 71,352.70
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Solution
The fourth proportional to 122,304.94, 168,781.12 and 71,352.70 is: 98,466.90
Step by Step Solution
- Step 1: Write the proportion equation
122,304.94 : 168,781.12 = 71,352.70 : x - Step 2: Convert to fraction form
122,304.94/168,781.12 = 71,352.70/x - Step 3: Cross multiply
122,304.94x = 168,781.12 × 71,352.70 - Step 4: Simplify right side
122,304.94x = 12,042,988,020.69 - Step 5: Solve for x
x = 12,042,988,020.69/122,304.94 - Step 6: Final answer
x = 98,466.90
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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.