Finding the Fourth Proportional to 139,187.79, 192,262.28 and 106,725.42
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Solution
The fourth proportional to 139,187.79, 192,262.28 and 106,725.42 is: 147,421.49
Step by Step Solution
- Step 1: Write the proportion equation
139,187.79 : 192,262.28 = 106,725.42 : x - Step 2: Convert to fraction form
139,187.79/192,262.28 = 106,725.42/x - Step 3: Cross multiply
139,187.79x = 192,262.28 × 106,725.42 - Step 4: Simplify right side
139,187.79x = 20,519,272,049.53 - Step 5: Solve for x
x = 20,519,272,049.53/139,187.79 - Step 6: Final answer
x = 147,421.49
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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.