Finding the Fourth Proportional to 83,207.20, 124,810.80 and 74,912.80
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Solution
The fourth proportional to 83,207.20, 124,810.80 and 74,912.80 is: 112,369.20
Step by Step Solution
- Step 1: Write the proportion equation
83,207.20 : 124,810.80 = 74,912.80 : x - Step 2: Convert to fraction form
83,207.20/124,810.80 = 74,912.80/x - Step 3: Cross multiply
83,207.20x = 124,810.80 × 74,912.80 - Step 4: Simplify right side
83,207.20x = 9,349,926,498.24 - Step 5: Solve for x
x = 9,349,926,498.24/83,207.20 - Step 6: Final answer
x = 112,369.20
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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.