Finding the Fourth Proportional to 135,199.64, 186,572.07 and 74,768.67
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Solution
The fourth proportional to 135,199.64, 186,572.07 and 74,768.67 is: 103,178.87
Step by Step Solution
- Step 1: Write the proportion equation
135,199.64 : 186,572.07 = 74,768.67 : x - Step 2: Convert to fraction form
135,199.64/186,572.07 = 74,768.67/x - Step 3: Cross multiply
135,199.64x = 186,572.07 × 74,768.67 - Step 4: Simplify right side
135,199.64x = 13,949,745,533.05 - Step 5: Solve for x
x = 13,949,745,533.05/135,199.64 - Step 6: Final answer
x = 103,178.87
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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.