Finding the Fourth Proportional to 135,018.78, 186,336.81 and 74,594.70
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Solution
The fourth proportional to 135,018.78, 186,336.81 and 74,594.70 is: 102,946.70
Step by Step Solution
- Step 1: Write the proportion equation
135,018.78 : 186,336.81 = 74,594.70 : x - Step 2: Convert to fraction form
135,018.78/186,336.81 = 74,594.70/x - Step 3: Cross multiply
135,018.78x = 186,336.81 × 74,594.70 - Step 4: Simplify right side
135,018.78x = 13,899,738,440.91 - Step 5: Solve for x
x = 13,899,738,440.91/135,018.78 - Step 6: Final answer
x = 102,946.70
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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.