Finding the Fourth Proportional to 142,223.53, 196,266.43 and 77,691.99
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Solution
The fourth proportional to 142,223.53, 196,266.43 and 77,691.99 is: 107,213.83
Step by Step Solution
- Step 1: Write the proportion equation
142,223.53 : 196,266.43 = 77,691.99 : x - Step 2: Convert to fraction form
142,223.53/196,266.43 = 77,691.99/x - Step 3: Cross multiply
142,223.53x = 196,266.43 × 77,691.99 - Step 4: Simplify right side
142,223.53x = 15,248,329,128.44 - Step 5: Solve for x
x = 15,248,329,128.44/142,223.53 - Step 6: Final answer
x = 107,213.83
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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.