Finding the Fourth Proportional to 126,590.84, 174,771.16 and 78,908.80
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Solution
The fourth proportional to 126,590.84, 174,771.16 and 78,908.80 is: 108,941.39
Step by Step Solution
- Step 1: Write the proportion equation
126,590.84 : 174,771.16 = 78,908.80 : x - Step 2: Convert to fraction form
126,590.84/174,771.16 = 78,908.80/x - Step 3: Cross multiply
126,590.84x = 174,771.16 × 78,908.80 - Step 4: Simplify right side
126,590.84x = 13,790,982,510.21 - Step 5: Solve for x
x = 13,790,982,510.21/126,590.84 - Step 6: Final answer
x = 108,941.39
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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.