Finding the Fourth Proportional to 135,342.44, 186,767.79 and 74,913.20
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Solution
The fourth proportional to 135,342.44, 186,767.79 and 74,913.20 is: 103,377.57
Step by Step Solution
- Step 1: Write the proportion equation
135,342.44 : 186,767.79 = 74,913.20 : x - Step 2: Convert to fraction form
135,342.44/186,767.79 = 74,913.20/x - Step 3: Cross multiply
135,342.44x = 186,767.79 × 74,913.20 - Step 4: Simplify right side
135,342.44x = 13,991,371,871.99 - Step 5: Solve for x
x = 13,991,371,871.99/135,342.44 - Step 6: Final answer
x = 103,377.57
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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.