Finding the Fourth Proportional to 134,736.19, 185,949.09 and 100,685.55
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Solution
The fourth proportional to 134,736.19, 185,949.09 and 100,685.55 is: 138,955.89
Step by Step Solution
- Step 1: Write the proportion equation
134,736.19 : 185,949.09 = 100,685.55 : x - Step 2: Convert to fraction form
134,736.19/185,949.09 = 100,685.55/x - Step 3: Cross multiply
134,736.19x = 185,949.09 × 100,685.55 - Step 4: Simplify right side
134,736.19x = 18,722,385,895.22 - Step 5: Solve for x
x = 18,722,385,895.22/134,736.19 - Step 6: Final answer
x = 138,955.89
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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.