Finding the Fourth Proportional to 118,707.20, 177,715.20 and 115,251.20
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Solution
The fourth proportional to 118,707.20, 177,715.20 and 115,251.20 is: 172,541.26
Step by Step Solution
- Step 1: Write the proportion equation
118,707.20 : 177,715.20 = 115,251.20 : x - Step 2: Convert to fraction form
118,707.20/177,715.20 = 115,251.20/x - Step 3: Cross multiply
118,707.20x = 177,715.20 × 115,251.20 - Step 4: Simplify right side
118,707.20x = 20,481,890,058.24 - Step 5: Solve for x
x = 20,481,890,058.24/118,707.20 - Step 6: Final answer
x = 172,541.26
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1.5x scale
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.