Finding the Fourth Proportional to 135,463.44, 186,923.58 and 78,102.12
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Solution
The fourth proportional to 135,463.44, 186,923.58 and 78,102.12 is: 107,771.72
Step by Step Solution
- Step 1: Write the proportion equation
135,463.44 : 186,923.58 = 78,102.12 : x - Step 2: Convert to fraction form
135,463.44/186,923.58 = 78,102.12/x - Step 3: Cross multiply
135,463.44x = 186,923.58 × 78,102.12 - Step 4: Simplify right side
135,463.44x = 14,599,127,875.99 - Step 5: Solve for x
x = 14,599,127,875.99/135,463.44 - Step 6: Final answer
x = 107,771.72
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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.