Finding the Fourth Proportional to 172,115.10, 257,798.78 and 83,182.09
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Solution
The fourth proportional to 172,115.10, 257,798.78 and 83,182.09 is: 124,592.45
Step by Step Solution
- Step 1: Write the proportion equation
172,115.10 : 257,798.78 = 83,182.09 : x - Step 2: Convert to fraction form
172,115.10/257,798.78 = 83,182.09/x - Step 3: Cross multiply
172,115.10x = 257,798.78 × 83,182.09 - Step 4: Simplify right side
172,115.10x = 21,444,241,319.85 - Step 5: Solve for x
x = 21,444,241,319.85/172,115.10 - Step 6: Final answer
x = 124,592.45
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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.