Finding the Fourth Proportional to 83,189.90, 124,784.74 and 20,009.99
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Solution
The fourth proportional to 83,189.90, 124,784.74 and 20,009.99 is: 30,014.95
Step by Step Solution
- Step 1: Write the proportion equation
83,189.90 : 124,784.74 = 20,009.99 : x - Step 2: Convert to fraction form
83,189.90/124,784.74 = 20,009.99/x - Step 3: Cross multiply
83,189.90x = 124,784.74 × 20,009.99 - Step 4: Simplify right side
83,189.90x = 2,496,940,725.60 - Step 5: Solve for x
x = 2,496,940,725.60/83,189.90 - Step 6: Final answer
x = 30,014.95
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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.