Finding the Fourth Proportional to 150,131,197.68, 207,119,481.75 and 91,346,737.20
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Solution
The fourth proportional to 150,131,197.68, 207,119,481.75 and 91,346,737.20 is: 126,021,034.67
Step by Step Solution
- Step 1: Write the proportion equation
150,131,197.68 : 207,119,481.75 = 91,346,737.20 : x - Step 2: Convert to fraction form
150,131,197.68/207,119,481.75 = 91,346,737.20/x - Step 3: Cross multiply
150,131,197.68x = 207,119,481.75 × 91,346,737.20 - Step 4: Simplify right side
150,131,197.68x = 18,919,688,868,417,448 - Step 5: Solve for x
x = 18,919,688,868,417,448/150,131,197.68 - Step 6: Final answer
x = 126,021,034.67
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1.5x scale
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.