Finding the Fourth Proportional to 126,171.36, 174,108.96 and 72,465.12
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Solution
The fourth proportional to 126,171.36, 174,108.96 and 72,465.12 is: 99,997.55
Step by Step Solution
- Step 1: Write the proportion equation
126,171.36 : 174,108.96 = 72,465.12 : x - Step 2: Convert to fraction form
126,171.36/174,108.96 = 72,465.12/x - Step 3: Cross multiply
126,171.36x = 174,108.96 × 72,465.12 - Step 4: Simplify right side
126,171.36x = 12,616,826,679.48 - Step 5: Solve for x
x = 12,616,826,679.48/126,171.36 - Step 6: Final answer
x = 99,997.55
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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.