Finding the Fourth Proportional to 128,746,851.20, 193,120,276.80 and 114,716,808.80
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Solution
The fourth proportional to 128,746,851.20, 193,120,276.80 and 114,716,808.80 is: 172,075,213.20
Step by Step Solution
- Step 1: Write the proportion equation
128,746,851.20 : 193,120,276.80 = 114,716,808.80 : x - Step 2: Convert to fraction form
128,746,851.20/193,120,276.80 = 114,716,808.80/x - Step 3: Cross multiply
128,746,851.20x = 193,120,276.80 × 114,716,808.80 - Step 4: Simplify right side
128,746,851.20x = 22,154,141,869,068,676 - Step 5: Solve for x
x = 22,154,141,869,068,676/128,746,851.20 - Step 6: Final answer
x = 172,075,213.20
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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.