Finding the Fourth Proportional to 139,354.94, 209,018.17 and 38,161.99
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Solution
The fourth proportional to 139,354.94, 209,018.17 and 38,161.99 is: 57,239.09
Step by Step Solution
- Step 1: Write the proportion equation
139,354.94 : 209,018.17 = 38,161.99 : x - Step 2: Convert to fraction form
139,354.94/209,018.17 = 38,161.99/x - Step 3: Cross multiply
139,354.94x = 209,018.17 × 38,161.99 - Step 4: Simplify right side
139,354.94x = 7,976,549,313.36 - Step 5: Solve for x
x = 7,976,549,313.36/139,354.94 - Step 6: Final answer
x = 57,239.09
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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.