Finding the Fourth Proportional to 115,913.92, 159,958.56 and 68,156.80
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Solution
The fourth proportional to 115,913.92, 159,958.56 and 68,156.80 is: 94,054.83
Step by Step Solution
- Step 1: Write the proportion equation
115,913.92 : 159,958.56 = 68,156.80 : x - Step 2: Convert to fraction form
115,913.92/159,958.56 = 68,156.80/x - Step 3: Cross multiply
115,913.92x = 159,958.56 × 68,156.80 - Step 4: Simplify right side
115,913.92x = 10,902,263,582.21 - Step 5: Solve for x
x = 10,902,263,582.21/115,913.92 - Step 6: Final answer
x = 94,054.83
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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.