Finding the Fourth Proportional to 143,420.46, 197,896.95 and 79,756.62
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Solution
The fourth proportional to 143,420.46, 197,896.95 and 79,756.62 is: 110,051.19
Step by Step Solution
- Step 1: Write the proportion equation
143,420.46 : 197,896.95 = 79,756.62 : x - Step 2: Convert to fraction form
143,420.46/197,896.95 = 79,756.62/x - Step 3: Cross multiply
143,420.46x = 197,896.95 × 79,756.62 - Step 4: Simplify right side
143,420.46x = 15,783,591,840.31 - Step 5: Solve for x
x = 15,783,591,840.31/143,420.46 - Step 6: Final answer
x = 110,051.19
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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.