Finding the Fourth Proportional to 106,668.80, 147,207.20 and 61,346.75
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Solution
The fourth proportional to 106,668.80, 147,207.20 and 61,346.75 is: 84,660.97
Step by Step Solution
- Step 1: Write the proportion equation
106,668.80 : 147,207.20 = 61,346.75 : x - Step 2: Convert to fraction form
106,668.80/147,207.20 = 61,346.75/x - Step 3: Cross multiply
106,668.80x = 147,207.20 × 61,346.75 - Step 4: Simplify right side
106,668.80x = 9,030,683,875.44 - Step 5: Solve for x
x = 9,030,683,875.44/106,668.80 - Step 6: Final answer
x = 84,660.97
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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.