Finding the Fourth Proportional to 125,217.81, 187,908.12 and 54,209.70
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Solution
The fourth proportional to 125,217.81, 187,908.12 and 54,209.70 is: 81,349.79
Step by Step Solution
- Step 1: Write the proportion equation
125,217.81 : 187,908.12 = 54,209.70 : x - Step 2: Convert to fraction form
125,217.81/187,908.12 = 54,209.70/x - Step 3: Cross multiply
125,217.81x = 187,908.12 × 54,209.70 - Step 4: Simplify right side
125,217.81x = 10,186,442,812.76 - Step 5: Solve for x
x = 10,186,442,812.76/125,217.81 - Step 6: Final answer
x = 81,349.79
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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.