Finding the Fourth Proportional to 135,390.09, 186,840.29 and 77,997.74
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Solution
The fourth proportional to 135,390.09, 186,840.29 and 77,997.74 is: 107,638.02
Step by Step Solution
- Step 1: Write the proportion equation
135,390.09 : 186,840.29 = 77,997.74 : x - Step 2: Convert to fraction form
135,390.09/186,840.29 = 77,997.74/x - Step 3: Cross multiply
135,390.09x = 186,840.29 × 77,997.74 - Step 4: Simplify right side
135,390.09x = 14,573,121,023.04 - Step 5: Solve for x
x = 14,573,121,023.04/135,390.09 - Step 6: Final answer
x = 107,638.02
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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.