Finding the Fourth Proportional to 145,890.99, 218,817.05 and 40,720.59
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Solution
The fourth proportional to 145,890.99, 218,817.05 and 40,720.59 is: 61,075.46
Step by Step Solution
- Step 1: Write the proportion equation
145,890.99 : 218,817.05 = 40,720.59 : x - Step 2: Convert to fraction form
145,890.99/218,817.05 = 40,720.59/x - Step 3: Cross multiply
145,890.99x = 218,817.05 × 40,720.59 - Step 4: Simplify right side
145,890.99x = 8,910,359,174.46 - Step 5: Solve for x
x = 8,910,359,174.46/145,890.99 - Step 6: Final answer
x = 61,075.46
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1.5x scale
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.