Finding the Fourth Proportional to 118,285.20, 177,427.80 and 84,934.80
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Solution
The fourth proportional to 118,285.20, 177,427.80 and 84,934.80 is: 127,402.20
Step by Step Solution
- Step 1: Write the proportion equation
118,285.20 : 177,427.80 = 84,934.80 : x - Step 2: Convert to fraction form
118,285.20/177,427.80 = 84,934.80/x - Step 3: Cross multiply
118,285.20x = 177,427.80 × 84,934.80 - Step 4: Simplify right side
118,285.20x = 15,069,794,707.44 - Step 5: Solve for x
x = 15,069,794,707.44/118,285.20 - Step 6: Final answer
x = 127,402.20
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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.