Finding the Fourth Proportional to 140,396,909.04, 193,739,650.20 and 77,669,310.96
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Solution
The fourth proportional to 140,396,909.04, 193,739,650.20 and 77,669,310.96 is: 107,179,176.80
Step by Step Solution
- Step 1: Write the proportion equation
140,396,909.04 : 193,739,650.20 = 77,669,310.96 : x - Step 2: Convert to fraction form
140,396,909.04/193,739,650.20 = 77,669,310.96/x - Step 3: Cross multiply
140,396,909.04x = 193,739,650.20 × 77,669,310.96 - Step 4: Simplify right side
140,396,909.04x = 15,047,625,136,665,424 - Step 5: Solve for x
x = 15,047,625,136,665,424/140,396,909.04 - Step 6: Final answer
x = 107,179,176.80
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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.