Finding the Fourth Proportional to 153,696.69, 212,101.03 and 85,713.75
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Solution
The fourth proportional to 153,696.69, 212,101.03 and 85,713.75 is: 118,284.75
Step by Step Solution
- Step 1: Write the proportion equation
153,696.69 : 212,101.03 = 85,713.75 : x - Step 2: Convert to fraction form
153,696.69/212,101.03 = 85,713.75/x - Step 3: Cross multiply
153,696.69x = 212,101.03 × 85,713.75 - Step 4: Simplify right side
153,696.69x = 18,179,974,660.16 - Step 5: Solve for x
x = 18,179,974,660.16/153,696.69 - Step 6: Final answer
x = 118,284.75
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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.