Finding the Fourth Proportional to 145,817.62, 201,228.27 and 78,749.62
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Solution
The fourth proportional to 145,817.62, 201,228.27 and 78,749.62 is: 108,674.45
Step by Step Solution
- Step 1: Write the proportion equation
145,817.62 : 201,228.27 = 78,749.62 : x - Step 2: Convert to fraction form
145,817.62/201,228.27 = 78,749.62/x - Step 3: Cross multiply
145,817.62x = 201,228.27 × 78,749.62 - Step 4: Simplify right side
145,817.62x = 15,846,649,795.76 - Step 5: Solve for x
x = 15,846,649,795.76/145,817.62 - Step 6: Final answer
x = 108,674.45
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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.