Finding the Fourth Proportional to 120,660,623.20, 180,990,934.80 and 120,660,623.20
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Solution
The fourth proportional to 120,660,623.20, 180,990,934.80 and 120,660,623.20 is: 180,990,934.80
Step by Step Solution
- Step 1: Write the proportion equation
120,660,623.20 : 180,990,934.80 = 120,660,623.20 : x - Step 2: Convert to fraction form
120,660,623.20/180,990,934.80 = 120,660,623.20/x - Step 3: Cross multiply
120,660,623.20x = 180,990,934.80 × 120,660,623.20 - Step 4: Simplify right side
120,660,623.20x = 21,838,478,986,518,568 - Step 5: Solve for x
x = 21,838,478,986,518,568/120,660,623.20 - Step 6: Final answer
x = 180,990,934.80
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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.