Finding the Fourth Proportional to 118,369.20, 177,121.80 and 87,265.20
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Solution
The fourth proportional to 118,369.20, 177,121.80 and 87,265.20 is: 130,579.32
Step by Step Solution
- Step 1: Write the proportion equation
118,369.20 : 177,121.80 = 87,265.20 : x - Step 2: Convert to fraction form
118,369.20/177,121.80 = 87,265.20/x - Step 3: Cross multiply
118,369.20x = 177,121.80 × 87,265.20 - Step 4: Simplify right side
118,369.20x = 15,456,569,301.36 - Step 5: Solve for x
x = 15,456,569,301.36/118,369.20 - Step 6: Final answer
x = 130,579.32
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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.