Finding the Fourth Proportional to 143,988.99, 215,968.90 and 38,818.59
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Solution
The fourth proportional to 143,988.99, 215,968.90 and 38,818.59 is: 58,223.95
Step by Step Solution
- Step 1: Write the proportion equation
143,988.99 : 215,968.90 = 38,818.59 : x - Step 2: Convert to fraction form
143,988.99/215,968.90 = 38,818.59/x - Step 3: Cross multiply
143,988.99x = 215,968.90 × 38,818.59 - Step 4: Simplify right side
143,988.99x = 8,383,606,907.91 - Step 5: Solve for x
x = 8,383,606,907.91/143,988.99 - Step 6: Final answer
x = 58,223.95
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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.