Finding the Fourth Proportional to 142,115.34, 196,102.50 and 84,757.80
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Solution
The fourth proportional to 142,115.34, 196,102.50 and 84,757.80 is: 116,955.82
Step by Step Solution
- Step 1: Write the proportion equation
142,115.34 : 196,102.50 = 84,757.80 : x - Step 2: Convert to fraction form
142,115.34/196,102.50 = 84,757.80/x - Step 3: Cross multiply
142,115.34x = 196,102.50 × 84,757.80 - Step 4: Simplify right side
142,115.34x = 16,621,216,474.50 - Step 5: Solve for x
x = 16,621,216,474.50/142,115.34 - Step 6: Final answer
x = 116,955.82
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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.