Finding the Fourth Proportional to 156,378.14, 215,800.98 and 84,757.40
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Solution
The fourth proportional to 156,378.14, 215,800.98 and 84,757.40 is: 116,964.75
Step by Step Solution
- Step 1: Write the proportion equation
156,378.14 : 215,800.98 = 84,757.40 : x - Step 2: Convert to fraction form
156,378.14/215,800.98 = 84,757.40/x - Step 3: Cross multiply
156,378.14x = 215,800.98 × 84,757.40 - Step 4: Simplify right side
156,378.14x = 18,290,729,982.25 - Step 5: Solve for x
x = 18,290,729,982.25/156,378.14 - Step 6: Final answer
x = 116,964.75
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1.5x scale
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.