Finding the Fourth Proportional to 153,691.75, 212,096.24 and 86,623.75
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Solution
The fourth proportional to 153,691.75, 212,096.24 and 86,623.75 is: 119,541.69
Step by Step Solution
- Step 1: Write the proportion equation
153,691.75 : 212,096.24 = 86,623.75 : x - Step 2: Convert to fraction form
153,691.75/212,096.24 = 86,623.75/x - Step 3: Cross multiply
153,691.75x = 212,096.24 × 86,623.75 - Step 4: Simplify right side
153,691.75x = 18,372,571,669.70 - Step 5: Solve for x
x = 18,372,571,669.70/153,691.75 - Step 6: Final answer
x = 119,541.69
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1.5x scale
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.