Finding the Fourth Proportional to 135,353.68, 186,785.81 and 74,923.02
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Solution
The fourth proportional to 135,353.68, 186,785.81 and 74,923.02 is: 103,392.51
Step by Step Solution
- Step 1: Write the proportion equation
135,353.68 : 186,785.81 = 74,923.02 : x - Step 2: Convert to fraction form
135,353.68/186,785.81 = 74,923.02/x - Step 3: Cross multiply
135,353.68x = 186,785.81 × 74,923.02 - Step 4: Simplify right side
135,353.68x = 13,994,556,791.04 - Step 5: Solve for x
x = 13,994,556,791.04/135,353.68 - Step 6: Final answer
x = 103,392.51
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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.