Finding the Fourth Proportional to 120,660,601.70, 180,990,902.55 and 120,660,601.70
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Solution
The fourth proportional to 120,660,601.70, 180,990,902.55 and 120,660,601.70 is: 180,990,902.55
Step by Step Solution
- Step 1: Write the proportion equation
120,660,601.70 : 180,990,902.55 = 120,660,601.70 : x - Step 2: Convert to fraction form
120,660,601.70/180,990,902.55 = 120,660,601.70/x - Step 3: Cross multiply
120,660,601.70x = 180,990,902.55 × 120,660,601.70 - Step 4: Simplify right side
120,660,601.70x = 21,838,471,203,909,068 - Step 5: Solve for x
x = 21,838,471,203,909,068/120,660,601.70 - Step 6: Final answer
x = 180,990,902.55
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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.