Finding the Fourth Proportional to 145,743.97, 218,558.70 and 70,842.19
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Solution
The fourth proportional to 145,743.97, 218,558.70 and 70,842.19 is: 106,235.45
Step by Step Solution
- Step 1: Write the proportion equation
145,743.97 : 218,558.70 = 70,842.19 : x - Step 2: Convert to fraction form
145,743.97/218,558.70 = 70,842.19/x - Step 3: Cross multiply
145,743.97x = 218,558.70 × 70,842.19 - Step 4: Simplify right side
145,743.97x = 15,483,176,951.55 - Step 5: Solve for x
x = 15,483,176,951.55/145,743.97 - Step 6: Final answer
x = 106,235.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.