Finding the Fourth Proportional to 106,946.68, 147,653.36 and 68,721.64
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Solution
The fourth proportional to 106,946.68, 147,653.36 and 68,721.64 is: 94,878.88
Step by Step Solution
- Step 1: Write the proportion equation
106,946.68 : 147,653.36 = 68,721.64 : x - Step 2: Convert to fraction form
106,946.68/147,653.36 = 68,721.64/x - Step 3: Cross multiply
106,946.68x = 147,653.36 × 68,721.64 - Step 4: Simplify right side
106,946.68x = 10,146,981,050.71 - Step 5: Solve for x
x = 10,146,981,050.71/106,946.68 - Step 6: Final answer
x = 94,878.88
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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.