Finding the Fourth Proportional to 206,657,611.08, 309,986,416.53 and 85,489,063.08
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Solution
The fourth proportional to 206,657,611.08, 309,986,416.53 and 85,489,063.08 is: 128,233,594.58
Step by Step Solution
- Step 1: Write the proportion equation
206,657,611.08 : 309,986,416.53 = 85,489,063.08 : x - Step 2: Convert to fraction form
206,657,611.08/309,986,416.53 = 85,489,063.08/x - Step 3: Cross multiply
206,657,611.08x = 309,986,416.53 × 85,489,063.08 - Step 4: Simplify right side
206,657,611.08x = 26,500,448,316,676,320 - Step 5: Solve for x
x = 26,500,448,316,676,320/206,657,611.08 - Step 6: Final answer
x = 128,233,594.58
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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.