Finding the Fourth Proportional to 126,688.06, 189,653.46 and 76,616.70
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Solution
The fourth proportional to 126,688.06, 189,653.46 and 76,616.70 is: 114,696.07
Step by Step Solution
- Step 1: Write the proportion equation
126,688.06 : 189,653.46 = 76,616.70 : x - Step 2: Convert to fraction form
126,688.06/189,653.46 = 76,616.70/x - Step 3: Cross multiply
126,688.06x = 189,653.46 × 76,616.70 - Step 4: Simplify right side
126,688.06x = 14,530,622,248.78 - Step 5: Solve for x
x = 14,530,622,248.78/126,688.06 - Step 6: Final answer
x = 114,696.07
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.