Finding the Fourth Proportional to 130,428.62, 180,912.35 and 126,971.79
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Solution
The fourth proportional to 130,428.62, 180,912.35 and 126,971.79 is: 176,117.52
Step by Step Solution
- Step 1: Write the proportion equation
130,428.62 : 180,912.35 = 126,971.79 : x - Step 2: Convert to fraction form
130,428.62/180,912.35 = 126,971.79/x - Step 3: Cross multiply
130,428.62x = 180,912.35 × 126,971.79 - Step 4: Simplify right side
130,428.62x = 22,970,764,277.75 - Step 5: Solve for x
x = 22,970,764,277.75/130,428.62 - Step 6: Final answer
x = 176,117.52
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.