Finding the Fourth Proportional to 156,768.10, 234,979.35 and 86,697.70
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Solution
The fourth proportional to 156,768.10, 234,979.35 and 86,697.70 is: 129,950.99
Step by Step Solution
- Step 1: Write the proportion equation
156,768.10 : 234,979.35 = 86,697.70 : x - Step 2: Convert to fraction form
156,768.10/234,979.35 = 86,697.70/x - Step 3: Cross multiply
156,768.10x = 234,979.35 × 86,697.70 - Step 4: Simplify right side
156,768.10x = 20,372,169,192.50 - Step 5: Solve for x
x = 20,372,169,192.50/156,768.10 - Step 6: Final answer
x = 129,950.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.