Finding the Fourth Proportional to 138,300,910.80, 207,451,366.20 and 130,364,725.20
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Solution
The fourth proportional to 138,300,910.80, 207,451,366.20 and 130,364,725.20 is: 195,547,087.80
Step by Step Solution
- Step 1: Write the proportion equation
138,300,910.80 : 207,451,366.20 = 130,364,725.20 : x - Step 2: Convert to fraction form
138,300,910.80/207,451,366.20 = 130,364,725.20/x - Step 3: Cross multiply
138,300,910.80x = 207,451,366.20 × 130,364,725.20 - Step 4: Simplify right side
138,300,910.80x = 27,044,340,347,027,568 - Step 5: Solve for x
x = 27,044,340,347,027,568/138,300,910.80 - Step 6: Final answer
x = 195,547,087.80
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1.5x scale
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.