Finding the Fourth Proportional to 151,948.75, 209,689.28 and 84,880.75
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Solution
The fourth proportional to 151,948.75, 209,689.28 and 84,880.75 is: 117,135.44
Step by Step Solution
- Step 1: Write the proportion equation
151,948.75 : 209,689.28 = 84,880.75 : x - Step 2: Convert to fraction form
151,948.75/209,689.28 = 84,880.75/x - Step 3: Cross multiply
151,948.75x = 209,689.28 × 84,880.75 - Step 4: Simplify right side
151,948.75x = 17,798,583,353.36 - Step 5: Solve for x
x = 17,798,583,353.36/151,948.75 - Step 6: Final answer
x = 117,135.44
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.