Finding the Fourth Proportional to 126,209.75, 174,170.05 and 69,621.12
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Solution
The fourth proportional to 126,209.75, 174,170.05 and 69,621.12 is: 96,077.48
Step by Step Solution
- Step 1: Write the proportion equation
126,209.75 : 174,170.05 = 69,621.12 : x - Step 2: Convert to fraction form
126,209.75/174,170.05 = 69,621.12/x - Step 3: Cross multiply
126,209.75x = 174,170.05 × 69,621.12 - Step 4: Simplify right side
126,209.75x = 12,125,913,777.40 - Step 5: Solve for x
x = 12,125,913,777.40/126,209.75 - Step 6: Final answer
x = 96,077.48
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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.