Finding the Fourth Proportional to 186,905.80, 257,920.99 and 106,325.74
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Solution
The fourth proportional to 186,905.80, 257,920.99 and 106,325.74 is: 146,724.39
Step by Step Solution
- Step 1: Write the proportion equation
186,905.80 : 257,920.99 = 106,325.74 : x - Step 2: Convert to fraction form
186,905.80/257,920.99 = 106,325.74/x - Step 3: Cross multiply
186,905.80x = 257,920.99 × 106,325.74 - Step 4: Simplify right side
186,905.80x = 27,423,640,123.28 - Step 5: Solve for x
x = 27,423,640,123.28/186,905.80 - Step 6: Final answer
x = 146,724.39
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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.