Finding the Fourth Proportional to 83,106.80, 124,660.20 and 74,121.20
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Solution
The fourth proportional to 83,106.80, 124,660.20 and 74,121.20 is: 111,181.80
Step by Step Solution
- Step 1: Write the proportion equation
83,106.80 : 124,660.20 = 74,121.20 : x - Step 2: Convert to fraction form
83,106.80/124,660.20 = 74,121.20/x - Step 3: Cross multiply
83,106.80x = 124,660.20 × 74,121.20 - Step 4: Simplify right side
83,106.80x = 9,239,963,616.24 - Step 5: Solve for x
x = 9,239,963,616.24/83,106.80 - Step 6: Final answer
x = 111,181.80
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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.