Finding the Fourth Proportional to 140,672.24, 194,130.09 and 86,955.87
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Solution
The fourth proportional to 140,672.24, 194,130.09 and 86,955.87 is: 120,000.59
Step by Step Solution
- Step 1: Write the proportion equation
140,672.24 : 194,130.09 = 86,955.87 : x - Step 2: Convert to fraction form
140,672.24/194,130.09 = 86,955.87/x - Step 3: Cross multiply
140,672.24x = 194,130.09 × 86,955.87 - Step 4: Simplify right side
140,672.24x = 16,880,750,869.13 - Step 5: Solve for x
x = 16,880,750,869.13/140,672.24 - Step 6: Final answer
x = 120,000.59
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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.