Finding the Fourth Proportional to 111,996.79, 167,910.71 and 67,612.99
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Solution
The fourth proportional to 111,996.79, 167,910.71 and 67,612.99 is: 101,368.48
Step by Step Solution
- Step 1: Write the proportion equation
111,996.79 : 167,910.71 = 67,612.99 : x - Step 2: Convert to fraction form
111,996.79/167,910.71 = 67,612.99/x - Step 3: Cross multiply
111,996.79x = 167,910.71 × 67,612.99 - Step 4: Simplify right side
111,996.79x = 11,352,944,818.06 - Step 5: Solve for x
x = 11,352,944,818.06/111,996.79 - Step 6: Final answer
x = 101,368.48
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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.