Finding the Fourth Proportional to 129,312,136.20, 193,968,204.30 and 115,282,093.80
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Solution
The fourth proportional to 129,312,136.20, 193,968,204.30 and 115,282,093.80 is: 172,923,140.70
Step by Step Solution
- Step 1: Write the proportion equation
129,312,136.20 : 193,968,204.30 = 115,282,093.80 : x - Step 2: Convert to fraction form
129,312,136.20/193,968,204.30 = 115,282,093.80/x - Step 3: Cross multiply
129,312,136.20x = 193,968,204.30 × 115,282,093.80 - Step 4: Simplify right side
129,312,136.20x = 22,361,060,722,330,164 - Step 5: Solve for x
x = 22,361,060,722,330,164/129,312,136.20 - Step 6: Final answer
x = 172,923,140.70
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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.