Finding the Fourth Proportional to 131,644.63, 181,669.39 and 71,215.08
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Solution
The fourth proportional to 131,644.63, 181,669.39 and 71,215.08 is: 98,276.70
Step by Step Solution
- Step 1: Write the proportion equation
131,644.63 : 181,669.39 = 71,215.08 : x - Step 2: Convert to fraction form
131,644.63/181,669.39 = 71,215.08/x - Step 3: Cross multiply
131,644.63x = 181,669.39 × 71,215.08 - Step 4: Simplify right side
131,644.63x = 12,937,600,142.40 - Step 5: Solve for x
x = 12,937,600,142.40/131,644.63 - Step 6: Final answer
x = 98,276.70
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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.