Finding the Fourth Proportional to 139,968,495.80, 209,952,743.70 and 133,591,203.80
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Solution
The fourth proportional to 139,968,495.80, 209,952,743.70 and 133,591,203.80 is: 200,386,805.70
Step by Step Solution
- Step 1: Write the proportion equation
139,968,495.80 : 209,952,743.70 = 133,591,203.80 : x - Step 2: Convert to fraction form
139,968,495.80/209,952,743.70 = 133,591,203.80/x - Step 3: Cross multiply
139,968,495.80x = 209,952,743.70 × 133,591,203.80 - Step 4: Simplify right side
139,968,495.80x = 28,047,839,771,995,864 - Step 5: Solve for x
x = 28,047,839,771,995,864/139,968,495.80 - Step 6: Final answer
x = 200,386,805.70
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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.