Finding the Fourth Proportional to 156,115.53, 215,439.42 and 84,495.54
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Solution
The fourth proportional to 156,115.53, 215,439.42 and 84,495.54 is: 116,603.84
Step by Step Solution
- Step 1: Write the proportion equation
156,115.53 : 215,439.42 = 84,495.54 : x - Step 2: Convert to fraction form
156,115.53/215,439.42 = 84,495.54/x - Step 3: Cross multiply
156,115.53x = 215,439.42 × 84,495.54 - Step 4: Simplify right side
156,115.53x = 18,203,670,130.19 - Step 5: Solve for x
x = 18,203,670,130.19/156,115.53 - Step 6: Final answer
x = 116,603.84
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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.