Finding the Fourth Proportional to 153,842.94, 212,313.92 and 85,873.14
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Solution
The fourth proportional to 153,842.94, 212,313.92 and 85,873.14 is: 118,510.88
Step by Step Solution
- Step 1: Write the proportion equation
153,842.94 : 212,313.92 = 85,873.14 : x - Step 2: Convert to fraction form
153,842.94/212,313.92 = 85,873.14/x - Step 3: Cross multiply
153,842.94x = 212,313.92 × 85,873.14 - Step 4: Simplify right side
153,842.94x = 18,232,062,546.74 - Step 5: Solve for x
x = 18,232,062,546.74/153,842.94 - Step 6: Final answer
x = 118,510.88
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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.