Finding the Fourth Proportional to 135,655.67, 186,989.10 and 106,928.75
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Solution
The fourth proportional to 135,655.67, 186,989.10 and 106,928.75 is: 147,391.63
Step by Step Solution
- Step 1: Write the proportion equation
135,655.67 : 186,989.10 = 106,928.75 : x - Step 2: Convert to fraction form
135,655.67/186,989.10 = 106,928.75/x - Step 3: Cross multiply
135,655.67x = 186,989.10 × 106,928.75 - Step 4: Simplify right side
135,655.67x = 19,994,510,726.63 - Step 5: Solve for x
x = 19,994,510,726.63/135,655.67 - Step 6: Final answer
x = 147,391.63
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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.