Finding the Fourth Proportional to 145,803.70, 201,213.36 and 85,368.68
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Solution
The fourth proportional to 145,803.70, 201,213.36 and 85,368.68 is: 117,811.27
Step by Step Solution
- Step 1: Write the proportion equation
145,803.70 : 201,213.36 = 85,368.68 : x - Step 2: Convert to fraction form
145,803.70/201,213.36 = 85,368.68/x - Step 3: Cross multiply
145,803.70x = 201,213.36 × 85,368.68 - Step 4: Simplify right side
145,803.70x = 17,177,318,941.56 - Step 5: Solve for x
x = 17,177,318,941.56/145,803.70 - Step 6: Final answer
x = 117,811.27
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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.