Finding the Fourth Proportional to 154,684.04, 213,481.08 and 86,707.54
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Solution
The fourth proportional to 154,684.04, 213,481.08 and 86,707.54 is: 119,665.99
Step by Step Solution
- Step 1: Write the proportion equation
154,684.04 : 213,481.08 = 86,707.54 : x - Step 2: Convert to fraction form
154,684.04/213,481.08 = 86,707.54/x - Step 3: Cross multiply
154,684.04x = 213,481.08 × 86,707.54 - Step 4: Simplify right side
154,684.04x = 18,510,419,283.34 - Step 5: Solve for x
x = 18,510,419,283.34/154,684.04 - Step 6: Final answer
x = 119,665.99
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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.