Finding the Fourth Proportional to 135,187.65, 186,555.60 and 74,756.70
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Solution
The fourth proportional to 135,187.65, 186,555.60 and 74,756.70 is: 103,162.39
Step by Step Solution
- Step 1: Write the proportion equation
135,187.65 : 186,555.60 = 74,756.70 : x - Step 2: Convert to fraction form
135,187.65/186,555.60 = 74,756.70/x - Step 3: Cross multiply
135,187.65x = 186,555.60 × 74,756.70 - Step 4: Simplify right side
135,187.65x = 13,946,281,022.52 - Step 5: Solve for x
x = 13,946,281,022.52/135,187.65 - Step 6: Final answer
x = 103,162.39
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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.