Finding the Fourth Proportional to 147,143,163.60, 203,042,320.92 and 90,618,966
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Solution
The fourth proportional to 147,143,163.60, 203,042,320.92 and 90,618,966 is: 125,044,784.45
Step by Step Solution
- Step 1: Write the proportion equation
147,143,163.60 : 203,042,320.92 = 90,618,966 : x - Step 2: Convert to fraction form
147,143,163.60/203,042,320.92 = 90,618,966/x - Step 3: Cross multiply
147,143,163.60x = 203,042,320.92 × 90,618,966 - Step 4: Simplify right side
147,143,163.60x = 18,399,485,176,010,568 - Step 5: Solve for x
x = 18,399,485,176,010,568/147,143,163.60 - Step 6: Final answer
x = 125,044,784.45
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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.