Finding the Fourth Proportional to 140,569.68, 193,989.26 and 76,907.46
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Solution
The fourth proportional to 140,569.68, 193,989.26 and 76,907.46 is: 106,133.99
Step by Step Solution
- Step 1: Write the proportion equation
140,569.68 : 193,989.26 = 76,907.46 : x - Step 2: Convert to fraction form
140,569.68/193,989.26 = 76,907.46/x - Step 3: Cross multiply
140,569.68x = 193,989.26 × 76,907.46 - Step 4: Simplify right side
140,569.68x = 14,919,221,253.88 - Step 5: Solve for x
x = 14,919,221,253.88/140,569.68 - Step 6: Final answer
x = 106,133.99
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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.