Finding the Fourth Proportional to 120,119,087.70, 180,178,631.55 and 107,364,503.70
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Solution
The fourth proportional to 120,119,087.70, 180,178,631.55 and 107,364,503.70 is: 161,046,755.55
Step by Step Solution
- Step 1: Write the proportion equation
120,119,087.70 : 180,178,631.55 = 107,364,503.70 : x - Step 2: Convert to fraction form
120,119,087.70/180,178,631.55 = 107,364,503.70/x - Step 3: Cross multiply
120,119,087.70x = 180,178,631.55 × 107,364,503.70 - Step 4: Simplify right side
120,119,087.70x = 19,344,789,353,710,912 - Step 5: Solve for x
x = 19,344,789,353,710,912/120,119,087.70 - Step 6: Final answer
x = 161,046,755.55
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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.