Finding the Fourth Proportional to 128,568,308.48, 177,425,568.96 and 69,831,541.12
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Solution
The fourth proportional to 128,568,308.48, 177,425,568.96 and 69,831,541.12 is: 96,368,234.61
Step by Step Solution
- Step 1: Write the proportion equation
128,568,308.48 : 177,425,568.96 = 69,831,541.12 : x - Step 2: Convert to fraction form
128,568,308.48/177,425,568.96 = 69,831,541.12/x - Step 3: Cross multiply
128,568,308.48x = 177,425,568.96 × 69,831,541.12 - Step 4: Simplify right side
128,568,308.48x = 12,389,900,914,569,638 - Step 5: Solve for x
x = 12,389,900,914,569,638/128,568,308.48 - Step 6: Final answer
x = 96,368,234.61
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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.