Finding the Fourth Proportional to 139,177.06, 192,043.92 and 77,920.08
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Solution
The fourth proportional to 139,177.06, 192,043.92 and 77,920.08 is: 107,518.28
Step by Step Solution
- Step 1: Write the proportion equation
139,177.06 : 192,043.92 = 77,920.08 : x - Step 2: Convert to fraction form
139,177.06/192,043.92 = 77,920.08/x - Step 3: Cross multiply
139,177.06x = 192,043.92 × 77,920.08 - Step 4: Simplify right side
139,177.06x = 14,964,077,609.91 - Step 5: Solve for x
x = 14,964,077,609.91/139,177.06 - Step 6: Final answer
x = 107,518.28
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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.