Finding the Fourth Proportional to 154,477.92, 213,129.99 and 86,484.90
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Solution
The fourth proportional to 154,477.92, 213,129.99 and 86,484.90 is: 119,321.43
Step by Step Solution
- Step 1: Write the proportion equation
154,477.92 : 213,129.99 = 86,484.90 : x - Step 2: Convert to fraction form
154,477.92/213,129.99 = 86,484.90/x - Step 3: Cross multiply
154,477.92x = 213,129.99 × 86,484.90 - Step 4: Simplify right side
154,477.92x = 18,432,525,872.15 - Step 5: Solve for x
x = 18,432,525,872.15/154,477.92 - Step 6: Final answer
x = 119,321.43
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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.