Finding the Fourth Proportional to 139,968,212.40, 209,952,318.60 and 128,882,746.80
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Solution
The fourth proportional to 139,968,212.40, 209,952,318.60 and 128,882,746.80 is: 193,324,120.20
Step by Step Solution
- Step 1: Write the proportion equation
139,968,212.40 : 209,952,318.60 = 128,882,746.80 : x - Step 2: Convert to fraction form
139,968,212.40/209,952,318.60 = 128,882,746.80/x - Step 3: Cross multiply
139,968,212.40x = 209,952,318.60 × 128,882,746.80 - Step 4: Simplify right side
139,968,212.40x = 27,059,231,518,196,728 - Step 5: Solve for x
x = 27,059,231,518,196,728/139,968,212.40 - Step 6: Final answer
x = 193,324,120.20
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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.