Finding the Fourth Proportional to 139,968,649.05, 209,952,973.58 and 68,305,033.05
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Solution
The fourth proportional to 139,968,649.05, 209,952,973.58 and 68,305,033.05 is: 102,457,549.58
Step by Step Solution
- Step 1: Write the proportion equation
139,968,649.05 : 209,952,973.58 = 68,305,033.05 : x - Step 2: Convert to fraction form
139,968,649.05/209,952,973.58 = 68,305,033.05/x - Step 3: Cross multiply
139,968,649.05x = 209,952,973.58 × 68,305,033.05 - Step 4: Simplify right side
139,968,649.05x = 14,340,844,798,986,150 - Step 5: Solve for x
x = 14,340,844,798,986,150/139,968,649.05 - Step 6: Final answer
x = 102,457,549.58
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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.