Finding the Fourth Proportional to 139,898.81, 193,060.36 and 76,236.63
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Solution
The fourth proportional to 139,898.81, 193,060.36 and 76,236.63 is: 105,206.54
Step by Step Solution
- Step 1: Write the proportion equation
139,898.81 : 193,060.36 = 76,236.63 : x - Step 2: Convert to fraction form
139,898.81/193,060.36 = 76,236.63/x - Step 3: Cross multiply
139,898.81x = 193,060.36 × 76,236.63 - Step 4: Simplify right side
139,898.81x = 14,718,270,604.31 - Step 5: Solve for x
x = 14,718,270,604.31/139,898.81 - Step 6: Final answer
x = 105,206.54
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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.