Finding the Fourth Proportional to 156,499.36, 216,013.44 and 128,272.48
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Solution
The fourth proportional to 156,499.36, 216,013.44 and 128,272.48 is: 177,052.35
Step by Step Solution
- Step 1: Write the proportion equation
156,499.36 : 216,013.44 = 128,272.48 : x - Step 2: Convert to fraction form
156,499.36/216,013.44 = 128,272.48/x - Step 3: Cross multiply
156,499.36x = 216,013.44 × 128,272.48 - Step 4: Simplify right side
156,499.36x = 27,708,579,662.13 - Step 5: Solve for x
x = 27,708,579,662.13/156,499.36 - Step 6: Final answer
x = 177,052.35
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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.