Finding the Fourth Proportional to 79,935.31, 119,208.18 and 78,862.75
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Solution
The fourth proportional to 79,935.31, 119,208.18 and 78,862.75 is: 117,608.66
Step by Step Solution
- Step 1: Write the proportion equation
79,935.31 : 119,208.18 = 78,862.75 : x - Step 2: Convert to fraction form
79,935.31/119,208.18 = 78,862.75/x - Step 3: Cross multiply
79,935.31x = 119,208.18 × 78,862.75 - Step 4: Simplify right side
79,935.31x = 9,401,084,897.30 - Step 5: Solve for x
x = 9,401,084,897.30/79,935.31 - Step 6: Final answer
x = 117,608.66
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.