Finding the Fourth Proportional to 139,879.41, 209,929.67 and 61,048.99
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Solution
The fourth proportional to 139,879.41, 209,929.67 and 61,048.99 is: 91,621.74
Step by Step Solution
- Step 1: Write the proportion equation
139,879.41 : 209,929.67 = 61,048.99 : x - Step 2: Convert to fraction form
139,879.41/209,929.67 = 61,048.99/x - Step 3: Cross multiply
139,879.41x = 209,929.67 × 61,048.99 - Step 4: Simplify right side
139,879.41x = 12,815,994,854.03 - Step 5: Solve for x
x = 12,815,994,854.03/139,879.41 - Step 6: Final answer
x = 91,621.74
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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.