Finding the Fourth Proportional to 156,923.68, 216,553.14 and 85,299.44
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Solution
The fourth proportional to 156,923.68, 216,553.14 and 85,299.44 is: 117,712.39
Step by Step Solution
- Step 1: Write the proportion equation
156,923.68 : 216,553.14 = 85,299.44 : x - Step 2: Convert to fraction form
156,923.68/216,553.14 = 85,299.44/x - Step 3: Cross multiply
156,923.68x = 216,553.14 × 85,299.44 - Step 4: Simplify right side
156,923.68x = 18,471,861,572.24 - Step 5: Solve for x
x = 18,471,861,572.24/156,923.68 - Step 6: Final answer
x = 117,712.39
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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.