Finding the Fourth Proportional to 156,715.10, 235,173.45 and 86,644.70
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Solution
The fourth proportional to 156,715.10, 235,173.45 and 86,644.70 is: 130,022.78
Step by Step Solution
- Step 1: Write the proportion equation
156,715.10 : 235,173.45 = 86,644.70 : x - Step 2: Convert to fraction form
156,715.10/235,173.45 = 86,644.70/x - Step 3: Cross multiply
156,715.10x = 235,173.45 × 86,644.70 - Step 4: Simplify right side
156,715.10x = 20,376,533,023.22 - Step 5: Solve for x
x = 20,376,533,023.22/156,715.10 - Step 6: Final answer
x = 130,022.78
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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.