Finding the Fourth Proportional to 131,778.30, 181,853.78 and 71,348.99
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Solution
The fourth proportional to 131,778.30, 181,853.78 and 71,348.99 is: 98,461.46
Step by Step Solution
- Step 1: Write the proportion equation
131,778.30 : 181,853.78 = 71,348.99 : x - Step 2: Convert to fraction form
131,778.30/181,853.78 = 71,348.99/x - Step 3: Cross multiply
131,778.30x = 181,853.78 × 71,348.99 - Step 4: Simplify right side
131,778.30x = 12,975,083,530.68 - Step 5: Solve for x
x = 12,975,083,530.68/131,778.30 - Step 6: Final answer
x = 98,461.46
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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.