Finding the Fourth Proportional to 120,470,613.75, 166,263,618.87 and 71,578,041.75
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Solution
The fourth proportional to 120,470,613.75, 166,263,618.87 and 71,578,041.75 is: 98,786,117.90
Step by Step Solution
- Step 1: Write the proportion equation
120,470,613.75 : 166,263,618.87 = 71,578,041.75 : x - Step 2: Convert to fraction form
120,470,613.75/166,263,618.87 = 71,578,041.75/x - Step 3: Cross multiply
120,470,613.75x = 166,263,618.87 × 71,578,041.75 - Step 4: Simplify right side
120,470,613.75x = 11,900,824,252,982,948 - Step 5: Solve for x
x = 11,900,824,252,982,948/120,470,613.75 - Step 6: Final answer
x = 98,786,117.90
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.