Finding the Fourth Proportional to 139,929.19, 193,102.31 and 76,267.44
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Solution
The fourth proportional to 139,929.19, 193,102.31 and 76,267.44 is: 105,249.09
Step by Step Solution
- Step 1: Write the proportion equation
139,929.19 : 193,102.31 = 76,267.44 : x - Step 2: Convert to fraction form
139,929.19/193,102.31 = 76,267.44/x - Step 3: Cross multiply
139,929.19x = 193,102.31 × 76,267.44 - Step 4: Simplify right side
139,929.19x = 14,727,419,032.46 - Step 5: Solve for x
x = 14,727,419,032.46/139,929.19 - Step 6: Final answer
x = 105,249.09
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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.