Finding the Fourth Proportional to 142,838.24, 214,070.76 and 79,655.84
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Solution
The fourth proportional to 142,838.24, 214,070.76 and 79,655.84 is: 119,379.70
Step by Step Solution
- Step 1: Write the proportion equation
142,838.24 : 214,070.76 = 79,655.84 : x - Step 2: Convert to fraction form
142,838.24/214,070.76 = 79,655.84/x - Step 3: Cross multiply
142,838.24x = 214,070.76 × 79,655.84 - Step 4: Simplify right side
142,838.24x = 17,051,986,207.24 - Step 5: Solve for x
x = 17,051,986,207.24/142,838.24 - Step 6: Final answer
x = 119,379.70
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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.