Finding the Fourth Proportional to 129,323,240.20, 193,984,860.30 and 115,293,197.80
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Solution
The fourth proportional to 129,323,240.20, 193,984,860.30 and 115,293,197.80 is: 172,939,796.70
Step by Step Solution
- Step 1: Write the proportion equation
129,323,240.20 : 193,984,860.30 = 115,293,197.80 : x - Step 2: Convert to fraction form
129,323,240.20/193,984,860.30 = 115,293,197.80/x - Step 3: Cross multiply
129,323,240.20x = 193,984,860.30 × 115,293,197.80 - Step 4: Simplify right side
129,323,240.20x = 22,365,134,868,773,268 - Step 5: Solve for x
x = 22,365,134,868,773,268/129,323,240.20 - Step 6: Final answer
x = 172,939,796.70
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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.