Finding the Fourth Proportional to 149,839.08, 206,768.79 and 81,842.28
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Solution
The fourth proportional to 149,839.08, 206,768.79 and 81,842.28 is: 112,937.35
Step by Step Solution
- Step 1: Write the proportion equation
149,839.08 : 206,768.79 = 81,842.28 : x - Step 2: Convert to fraction form
149,839.08/206,768.79 = 81,842.28/x - Step 3: Cross multiply
149,839.08x = 206,768.79 × 81,842.28 - Step 4: Simplify right side
149,839.08x = 16,922,429,206.44 - Step 5: Solve for x
x = 16,922,429,206.44/149,839.08 - Step 6: Final answer
x = 112,937.35
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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.