Finding the Fourth Proportional to 153,696.75, 212,103.14 and 86,628.75
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Solution
The fourth proportional to 153,696.75, 212,103.14 and 86,628.75 is: 119,548.59
Step by Step Solution
- Step 1: Write the proportion equation
153,696.75 : 212,103.14 = 86,628.75 : x - Step 2: Convert to fraction form
153,696.75/212,103.14 = 86,628.75/x - Step 3: Cross multiply
153,696.75x = 212,103.14 × 86,628.75 - Step 4: Simplify right side
153,696.75x = 18,374,229,456.13 - Step 5: Solve for x
x = 18,374,229,456.13/153,696.75 - Step 6: Final answer
x = 119,548.59
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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.