Finding the Fourth Proportional to 132,090,007.20, 198,135,010.80 and 51,258,487.20
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Solution
The fourth proportional to 132,090,007.20, 198,135,010.80 and 51,258,487.20 is: 76,887,730.80
Step by Step Solution
- Step 1: Write the proportion equation
132,090,007.20 : 198,135,010.80 = 51,258,487.20 : x - Step 2: Convert to fraction form
132,090,007.20/198,135,010.80 = 51,258,487.20/x - Step 3: Cross multiply
132,090,007.20x = 198,135,010.80 × 51,258,487.20 - Step 4: Simplify right side
132,090,007.20x = 10,156,100,914,963,662 - Step 5: Solve for x
x = 10,156,100,914,963,662/132,090,007.20 - Step 6: Final answer
x = 76,887,730.80
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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.