Finding the Fourth Proportional to 126,122.08, 189,055.36 and 81,776.96
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Solution
The fourth proportional to 126,122.08, 189,055.36 and 81,776.96 is: 122,582.60
Step by Step Solution
- Step 1: Write the proportion equation
126,122.08 : 189,055.36 = 81,776.96 : x - Step 2: Convert to fraction form
126,122.08/189,055.36 = 81,776.96/x - Step 3: Cross multiply
126,122.08x = 189,055.36 × 81,776.96 - Step 4: Simplify right side
126,122.08x = 15,460,372,612.51 - Step 5: Solve for x
x = 15,460,372,612.51/126,122.08 - Step 6: Final answer
x = 122,582.60
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.