Finding the Fourth Proportional to 126,778.57, 190,207.65 and 76,235.79
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Solution
The fourth proportional to 126,778.57, 190,207.65 and 76,235.79 is: 114,377.61
Step by Step Solution
- Step 1: Write the proportion equation
126,778.57 : 190,207.65 = 76,235.79 : x - Step 2: Convert to fraction form
126,778.57/190,207.65 = 76,235.79/x - Step 3: Cross multiply
126,778.57x = 190,207.65 × 76,235.79 - Step 4: Simplify right side
126,778.57x = 14,500,630,461.79 - Step 5: Solve for x
x = 14,500,630,461.79/126,778.57 - Step 6: Final answer
x = 114,377.61
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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.