Finding the Fourth Proportional to 169,164.09, 253,044.86 and 128,878.25
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Solution
The fourth proportional to 169,164.09, 253,044.86 and 128,878.25 is: 192,783.09
Step by Step Solution
- Step 1: Write the proportion equation
169,164.09 : 253,044.86 = 128,878.25 : x - Step 2: Convert to fraction form
169,164.09/253,044.86 = 128,878.25/x - Step 3: Cross multiply
169,164.09x = 253,044.86 × 128,878.25 - Step 4: Simplify right side
169,164.09x = 32,611,976,818.68 - Step 5: Solve for x
x = 32,611,976,818.68/169,164.09 - Step 6: Final answer
x = 192,783.09
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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.