Finding the Fourth Proportional to 143,539.48, 197,879.18 and 100,965.88
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Solution
The fourth proportional to 143,539.48, 197,879.18 and 100,965.88 is: 139,188.50
Step by Step Solution
- Step 1: Write the proportion equation
143,539.48 : 197,879.18 = 100,965.88 : x - Step 2: Convert to fraction form
143,539.48/197,879.18 = 100,965.88/x - Step 3: Cross multiply
143,539.48x = 197,879.18 × 100,965.88 - Step 4: Simplify right side
143,539.48x = 19,979,044,048.15 - Step 5: Solve for x
x = 19,979,044,048.15/143,539.48 - Step 6: Final answer
x = 139,188.50
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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.