Finding the Fourth Proportional to 129,492,071.80, 194,238,107.70 and 128,736,244.60
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Solution
The fourth proportional to 129,492,071.80, 194,238,107.70 and 128,736,244.60 is: 193,104,366.90
Step by Step Solution
- Step 1: Write the proportion equation
129,492,071.80 : 194,238,107.70 = 128,736,244.60 : x - Step 2: Convert to fraction form
129,492,071.80/194,238,107.70 = 128,736,244.60/x - Step 3: Cross multiply
129,492,071.80x = 194,238,107.70 × 128,736,244.60 - Step 4: Simplify right side
129,492,071.80x = 25,005,484,543,508,340 - Step 5: Solve for x
x = 25,005,484,543,508,340/129,492,071.80 - Step 6: Final answer
x = 193,104,366.90
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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.