Finding the Fourth Proportional to 169,031,471.20, 253,736,163.60 and 130,862,197.60
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Solution
The fourth proportional to 169,031,471.20, 253,736,163.60 and 130,862,197.60 is: 196,439,584.56
Step by Step Solution
- Step 1: Write the proportion equation
169,031,471.20 : 253,736,163.60 = 130,862,197.60 : x - Step 2: Convert to fraction form
169,031,471.20/253,736,163.60 = 130,862,197.60/x - Step 3: Cross multiply
169,031,471.20x = 253,736,163.60 × 130,862,197.60 - Step 4: Simplify right side
169,031,471.20x = 33,204,471,979,289,124 - Step 5: Solve for x
x = 33,204,471,979,289,124/169,031,471.20 - Step 6: Final answer
x = 196,439,584.56
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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.