Finding the Fourth Proportional to 117,431,138.70, 176,146,708.05 and 73,782,117.90
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Solution
The fourth proportional to 117,431,138.70, 176,146,708.05 and 73,782,117.90 is: 110,673,176.85
Step by Step Solution
- Step 1: Write the proportion equation
117,431,138.70 : 176,146,708.05 = 73,782,117.90 : x - Step 2: Convert to fraction form
117,431,138.70/176,146,708.05 = 73,782,117.90/x - Step 3: Cross multiply
117,431,138.70x = 176,146,708.05 × 73,782,117.90 - Step 4: Simplify right side
117,431,138.70x = 12,996,477,181,041,982 - Step 5: Solve for x
x = 12,996,477,181,041,982/117,431,138.70 - Step 6: Final answer
x = 110,673,176.85
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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.