Finding the Fourth Proportional to 168,438,613.20, 252,657,919.80 and 40,787,797.20
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Solution
The fourth proportional to 168,438,613.20, 252,657,919.80 and 40,787,797.20 is: 61,181,695.80
Step by Step Solution
- Step 1: Write the proportion equation
168,438,613.20 : 252,657,919.80 = 40,787,797.20 : x - Step 2: Convert to fraction form
168,438,613.20/252,657,919.80 = 40,787,797.20/x - Step 3: Cross multiply
168,438,613.20x = 252,657,919.80 × 40,787,797.20 - Step 4: Simplify right side
168,438,613.20x = 10,305,359,993,776,266 - Step 5: Solve for x
x = 10,305,359,993,776,266/168,438,613.20 - Step 6: Final answer
x = 61,181,695.80
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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.