Finding the Fourth Proportional to 121,898.70, 182,491.65 and 86,906.70
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Solution
The fourth proportional to 121,898.70, 182,491.65 and 86,906.70 is: 130,105.96
Step by Step Solution
- Step 1: Write the proportion equation
121,898.70 : 182,491.65 = 86,906.70 : x - Step 2: Convert to fraction form
121,898.70/182,491.65 = 86,906.70/x - Step 3: Cross multiply
121,898.70x = 182,491.65 × 86,906.70 - Step 4: Simplify right side
121,898.70x = 15,859,747,079.06 - Step 5: Solve for x
x = 15,859,747,079.06/121,898.70 - Step 6: Final answer
x = 130,105.96
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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.