Finding the Fourth Proportional to 156,135.47, 215,467.47 and 84,515.46
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Solution
The fourth proportional to 156,135.47, 215,467.47 and 84,515.46 is: 116,631.62
Step by Step Solution
- Step 1: Write the proportion equation
156,135.47 : 215,467.47 = 84,515.46 : x - Step 2: Convert to fraction form
156,135.47/215,467.47 = 84,515.46/x - Step 3: Cross multiply
156,135.47x = 215,467.47 × 84,515.46 - Step 4: Simplify right side
156,135.47x = 18,210,332,342.09 - Step 5: Solve for x
x = 18,210,332,342.09/156,135.47 - Step 6: Final answer
x = 116,631.62
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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.