Finding the Fourth Proportional to 135,346.62, 186,735.40 and 78,747.06
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Solution
The fourth proportional to 135,346.62, 186,735.40 and 78,747.06 is: 108,645.96
Step by Step Solution
- Step 1: Write the proportion equation
135,346.62 : 186,735.40 = 78,747.06 : x - Step 2: Convert to fraction form
135,346.62/186,735.40 = 78,747.06/x - Step 3: Cross multiply
135,346.62x = 186,735.40 × 78,747.06 - Step 4: Simplify right side
135,346.62x = 14,704,863,551.06 - Step 5: Solve for x
x = 14,704,863,551.06/135,346.62 - Step 6: Final answer
x = 108,645.96
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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.